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Observing Runs
GW190521 - LIGO
GW190521. On 2 September 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of GW190521, the most massive gravitational wave binary observed to date. LIGO SCIENTIFIC COLLABORATION LIGO SCIENTIFIC COLLABORATION Many people are familiar with the story of "Newton's Apple" - while sitting under a tree one day, Newton observed an apple falling in the distance and realized the moon he saw in the sky orbits the Earth because of the same force that made the apple fall. LIGO SCIENTIFIC COLLABORATION What did we find? On April 12, 2019, the LIGO Scientific Collaboration and Virgo Collaboration observed gravitational waves produced by the inspiral and merger of two black holes. This event, dubbed GW190412, was observed with all three detectors operating in the network: both LIGO detectors (one in Hanford, Washington and one in Livingston, Louisiana) as well as the Virgo detector (located in DCC - LIGO DOCUMENT CONTROL CENTER PORTAL Oct-2020: GWTC-2 GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run: Dec-2018: GWTC-1 GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and SecondObserving Runs
GW190521 - LIGO
GW190521. On 2 September 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of GW190521, the most massive gravitational wave binary observed to date. LIGO SCIENTIFIC COLLABORATION LIGO SCIENTIFIC COLLABORATION LIGO Generations, a 25-min documentary by filmmaker Kai Staats showing how scientists bridge the gap between the special language of astrophysics and bright young students.; LIGO, A Passion for Understanding, a 22-minute documentary about LIGO exploring the science behind it, by filmmaker Kai Staats.This documentary premiered on Space.com on April 15, 2014.GW190814 - LIGO
GW190814: heaviest neutron star or lightest black hole? In August 2019, the LIGO-Virgo gravitational-wave network witnessed the merger of a black hole with 23 times the mass of our sun and a binary companion 2.6 times the mass of the sun. LIGO SCIENTIFIC COLLABORATION Glossary: Amplitude and Phase: The two variables describing an electro-magnetic wave: "amplitude" describes the height of the peak of the wave, while the "phase" tells you when the peaks arrive at a certain location. Vacuum state and "zero-point" fluctuations: The "vacuum state" is a state in which there are no sources of light. However, it is still described by an electro-magnetic field which LIGO SCIENTIFIC COLLABORATION Figures from the Publication. For more information on the meaning of these figures, see the preprint at arXiv.org.. Fig 1. The Advanced LIGO detectors are Michelson interferometers with 4-km long arms. The arms contain Fabry-Perot optical cavities to amplify the signal from a gravitational wave. The electromagnetic field from the laser is modulated at radio frequencies (9 and 45 MHz) toGW170817 - LIGO
GW170817 - The first observation of gravitational-waves from a binary neutron star inspiral . On October 16, 2017, the LIGO Scientific Collaboration, Virgo Collaboration, and its partners announced the first observation of gravitational-waves from a pair of inspiralingneutron stars.
GW170814 - LIGO
Skymap of the LIGO/Virgo black hole mergers. This three-dimensional projection of the Milky Way galaxy onto a transparent globe shows the probable locations of the three confirmed black-hole merger events observed by the two LIGO detectors—GW150914 (dark green), GW151226 (blue), GW170104 (magenta)—and a fourth confirmed detection (GW170814, light green, lower-left) that was observed by MIL-STD-883J W/CHANGE 5 MIL-STD-883J w/CHANGE 5 METHOD 1014.14 7 June 2013 4 2. TEST CONDITIONS. 2.1 Test Conditions A1, A2, and A4 fine leak tracer gas (He). 1/ 2.1.1 Apparatus. Apparatus required shall consist of suitable pressure and vacuum chambers and a mass spectrometer-type LIGO-G1700404-V3: LIGO VOYAGER CRYOGENICS AT STANFORD Abstract: Update on the LIGO Voyager work at Stanford. This summarizes of the approach of achieving cold test masses without compromising vibration isolation. QUANTUM NOISE REDUCTION USING SQUEEZED STATES IN LIGO Quantum noise reduction using squeezed states in LIGO by Sheila E Dwyer B.A., Wellesley College (2005) Submitted to the Department of Physics in partial ful llment of the requirements for the degree of LIGO-T2000407-V3: INSTRUMENT SCIENCE WHITE PAPER 2020 Instrument Science White Paper 2020. Document #: LIGO-T2000407-v3 Document type: T - Technical notes. Other Versions: DETECTION OF GRAVITATIONAL WAVES LIGO SCIENTIFIC COLLABORATIONGW190521 - LIGO
GW190521. On 2 September 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of GW190521, the most massive gravitational wave binary observed to date. The two inspiralling black holes had masses of about 85 and 66 solar masses, and resulted in the formation of a black hole remnant of 142 solarmasses.
DCC - LIGO DOCUMENT CONTROL CENTER PORTAL Oct-2020: GWTC-2 GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run: Dec-2018: GWTC-1 GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and SecondObserving Runs
LIGO SCIENTIFIC COLLABORATION Masses feel gravitational force because every mass in the universe has its own gravitational field, which adds together with all of the other fields in the universe. According to Newton's theory of gravity, when a mass changes position, the entire gravitational field throughout the universe changes instantaneously, and the resultantGW190814 - LIGO
GW190814. On 23 June 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a gravitational wave binary, GW190814. While one component of this binary is a 23 solar-mass black hole, the other (2.6 solar mass) component could beeither a
O1O2CATALOG
O1/O2 Catalog. On December 1, 2018, the LIGO Scientific Collaboration and the Virgo Collaboration announced the full results of their searches for gravitational-waves from stellar-mass coalescing compact binaries with an advanced detector network. In addition to the six previously announced binary black hole and single binary neutron starGW190425 - LIGO
GW190425. On January 6, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a second binary neutron star merger, labeled GW190425. This is the first confirmed gravitational-wave detection based on data from a single observatory.No
LIGO SCIENTIFIC COLLABORATION What did we find? On April 12, 2019, the LIGO Scientific Collaboration and Virgo Collaboration observed gravitational waves produced by the inspiral and merger of two black holes. This event, dubbed GW190412, was observed with all three detectors operating in the network: both LIGO detectors (one in Hanford, Washington and one in Livingston, Louisiana) as well as the Virgo detector (located inGW170817 - LIGO
A map of the approximately 70 light-based observatories that detected the gravitational-wave event called GW170817. On 17 August 2017, the LIGO and Virgo detectors spotted gravitational waves from two colliding neutron stars. Light-based telescopes around the globe observed the aftermath of the collision in the hours, days, and weeksfollowing.
DETECTION OF GRAVITATIONAL WAVES LIGO SCIENTIFIC COLLABORATIONGW190521 - LIGO
GW190521. On 2 September 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of GW190521, the most massive gravitational wave binary observed to date. The two inspiralling black holes had masses of about 85 and 66 solar masses, and resulted in the formation of a black hole remnant of 142 solarmasses.
DCC - LIGO DOCUMENT CONTROL CENTER PORTAL Oct-2020: GWTC-2 GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run: Dec-2018: GWTC-1 GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and SecondObserving Runs
LIGO SCIENTIFIC COLLABORATION Masses feel gravitational force because every mass in the universe has its own gravitational field, which adds together with all of the other fields in the universe. According to Newton's theory of gravity, when a mass changes position, the entire gravitational field throughout the universe changes instantaneously, and the resultantGW190814 - LIGO
GW190814. On 23 June 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a gravitational wave binary, GW190814. While one component of this binary is a 23 solar-mass black hole, the other (2.6 solar mass) component could beeither a
O1O2CATALOG
O1/O2 Catalog. On December 1, 2018, the LIGO Scientific Collaboration and the Virgo Collaboration announced the full results of their searches for gravitational-waves from stellar-mass coalescing compact binaries with an advanced detector network. In addition to the six previously announced binary black hole and single binary neutron starGW190425 - LIGO
GW190425. On January 6, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a second binary neutron star merger, labeled GW190425. This is the first confirmed gravitational-wave detection based on data from a single observatory.No
LIGO SCIENTIFIC COLLABORATION What did we find? On April 12, 2019, the LIGO Scientific Collaboration and Virgo Collaboration observed gravitational waves produced by the inspiral and merger of two black holes. This event, dubbed GW190412, was observed with all three detectors operating in the network: both LIGO detectors (one in Hanford, Washington and one in Livingston, Louisiana) as well as the Virgo detector (located inGW170817 - LIGO
A map of the approximately 70 light-based observatories that detected the gravitational-wave event called GW170817. On 17 August 2017, the LIGO and Virgo detectors spotted gravitational waves from two colliding neutron stars. Light-based telescopes around the globe observed the aftermath of the collision in the hours, days, and weeksfollowing.
DETECTION OF GRAVITATIONAL WAVES Detections. Information about gravitational-wave detections made by LIGO to date. Jump to a separate page for a specific event (listed in reverse-chronological order of announcement date), or see the General Detection Resources section below for further information on LIGO detections.. O3a Catalog (GWTC-2: Summary of detections during the first half of the third observing run.) LIGO SCIENTIFIC COLLABORATION press releases. Jan 6, 2020. LIGO-Virgo Network Catches Another Neutron Star Collision. Press Release PDF. Additional information at the detection page for GW190425 . Oct 16, 2017. LIGO and Virgo make first detection of gravitational waves produced by colliding neutronstars.
GW190814 - LIGO
GW190814. On 23 June 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a gravitational wave binary, GW190814. While one component of this binary is a 23 solar-mass black hole, the other (2.6 solar mass) component could beeither a
LSC GOVERNANCE
LSC Organizational Structure Charter. The goal of the charter is to establish the functions and organizational structure of the LIGO Scientific Collaboration (LSC), to identify its responsibilities, to set guidelines for the role the Collaboration will play in the scientific research and operation of the LIGO and other LSC detectors and for the release of scientific results, and to delineateO1O2CATALOG
O1/O2 Catalog. On December 1, 2018, the LIGO Scientific Collaboration and the Virgo Collaboration announced the full results of their searches for gravitational-waves from stellar-mass coalescing compact binaries with an advanced detector network. In addition to the six previously announced binary black hole and single binary neutron starGW190412 - LIGO
GW190412. On April 18, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of gravitational waves from a binary black hole merger, labeled GW190412. This is the first binary black hole detection with clear evidence for unequal-masscomponents.
LIGO SCIENTIFIC COLLABORATION Gravitational waves have a finite speed and are expected to travel at the speed of light. This will induce a detection delay (up to about 10 milliseconds) between the two LIGO detectors. Using this delay and the delay between LIGO and its international partners will help LIGO SCIENTIFIC COLLABORATION Stochastic gravitational waves are the relic gravitational waves from the early evolution of the universe. Much like the Cosmic Micro-wave Background (CMB), which is likely to be the leftover light from the Big Bang, these gravitational waves arise from a large number of random, independent events combining to create a cosmic gravitationalwave background.
LIGO SCIENTIFIC COLLABORATION Inspiral gravitational waves are generated during the end-of-life stage of binary systems where the two objects merge into one. These systems are usually two neutron stars, two black holes, or a neutron star and a black hole whose orbits have degraded to the point that the two masses are about to coalesce. As the two masses rotate around each GWTC-2: 重力波の新しいカタログ 図2: 重力波イベントGW190701 について,グリッチを取り 除く前と後の時間・周波数図.ライゴのリビングストン検出 器では光の散乱によって40 Hz 以下の周波数でノイズの超過 DETECTION OF GRAVITATIONAL WAVES LIGO SCIENTIFIC COLLABORATIONGW190521 - LIGO
GW190521. On 2 September 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of GW190521, the most massive gravitational wave binary observed to date. The two inspiralling black holes had masses of about 85 and 66 solar masses, and resulted in the formation of a black hole remnant of 142 solarmasses.
DCC - LIGO DOCUMENT CONTROL CENTER PORTAL Oct-2020: GWTC-2 GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run: Dec-2018: GWTC-1 GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and SecondObserving Runs
LIGO SCIENTIFIC COLLABORATION Masses feel gravitational force because every mass in the universe has its own gravitational field, which adds together with all of the other fields in the universe. According to Newton's theory of gravity, when a mass changes position, the entire gravitational field throughout the universe changes instantaneously, and the resultantGW190814 - LIGO
GW190814. On 23 June 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a gravitational wave binary, GW190814. While one component of this binary is a 23 solar-mass black hole, the other (2.6 solar mass) component could beeither a
GW190425 - LIGO
GW190425. On January 6, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a second binary neutron star merger, labeled GW190425. This is the first confirmed gravitational-wave detection based on data from a single observatory.No
LIGO SCIENTIFIC COLLABORATION What did we find? On April 12, 2019, the LIGO Scientific Collaboration and Virgo Collaboration observed gravitational waves produced by the inspiral and merger of two black holes. This event, dubbed GW190412, was observed with all three detectors operating in the network: both LIGO detectors (one in Hanford, Washington and one in Livingston, Louisiana) as well as the Virgo detector (located inGW170817 - LIGO
A map of the approximately 70 light-based observatories that detected the gravitational-wave event called GW170817. On 17 August 2017, the LIGO and Virgo detectors spotted gravitational waves from two colliding neutron stars. Light-based telescopes around the globe observed the aftermath of the collision in the hours, days, and weeksfollowing.
GWTC-2: 重力波の新しいカタログ 図2: 重力波イベントGW190701 について,グリッチを取り 除く前と後の時間・周波数図.ライゴのリビングストン検出 器では光の散乱によって40 Hz 以下の周波数でノイズの超過 DETECTION OF GRAVITATIONAL WAVES LIGO SCIENTIFIC COLLABORATIONGW190521 - LIGO
GW190521. On 2 September 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of GW190521, the most massive gravitational wave binary observed to date. The two inspiralling black holes had masses of about 85 and 66 solar masses, and resulted in the formation of a black hole remnant of 142 solarmasses.
DCC - LIGO DOCUMENT CONTROL CENTER PORTAL Oct-2020: GWTC-2 GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run: Dec-2018: GWTC-1 GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and SecondObserving Runs
LIGO SCIENTIFIC COLLABORATION Masses feel gravitational force because every mass in the universe has its own gravitational field, which adds together with all of the other fields in the universe. According to Newton's theory of gravity, when a mass changes position, the entire gravitational field throughout the universe changes instantaneously, and the resultantGW190814 - LIGO
GW190814. On 23 June 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a gravitational wave binary, GW190814. While one component of this binary is a 23 solar-mass black hole, the other (2.6 solar mass) component could beeither a
GW190425 - LIGO
GW190425. On January 6, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a second binary neutron star merger, labeled GW190425. This is the first confirmed gravitational-wave detection based on data from a single observatory.No
LIGO SCIENTIFIC COLLABORATION What did we find? On April 12, 2019, the LIGO Scientific Collaboration and Virgo Collaboration observed gravitational waves produced by the inspiral and merger of two black holes. This event, dubbed GW190412, was observed with all three detectors operating in the network: both LIGO detectors (one in Hanford, Washington and one in Livingston, Louisiana) as well as the Virgo detector (located inGW170817 - LIGO
A map of the approximately 70 light-based observatories that detected the gravitational-wave event called GW170817. On 17 August 2017, the LIGO and Virgo detectors spotted gravitational waves from two colliding neutron stars. Light-based telescopes around the globe observed the aftermath of the collision in the hours, days, and weeksfollowing.
GWTC-2: 重力波の新しいカタログ 図2: 重力波イベントGW190701 について,グリッチを取り 除く前と後の時間・周波数図.ライゴのリビングストン検出 器では光の散乱によって40 Hz 以下の周波数でノイズの超過 LSC - LIGO SCIENTIFIC COLLABORATION Read the September 2020 Issue of LIGO Magazine. Sep 2, 2020. Press release: A “bang” in LIGO and Virgo detectors signals most massive gravitational-wave source yet. Sep 1, 2020. Webinar on latest results from the LIGO-Virgo-Kagra Collaboration. Aug 12, 2020. LIGO detectorsreceive a
LIGO SCIENTIFIC COLLABORATION press releases. Jan 6, 2020. LIGO-Virgo Network Catches Another Neutron Star Collision. Press Release PDF. Additional information at the detection page for GW190425 . Oct 16, 2017. LIGO and Virgo make first detection of gravitational waves produced by colliding neutronstars.
GW190814 - LIGO
GW190814. On 23 June 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a gravitational wave binary, GW190814. While one component of this binary is a 23 solar-mass black hole, the other (2.6 solar mass) component could beeither a
GW190425 - LIGO
GW190425. On January 6, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a second binary neutron star merger, labeled GW190425. This is the first confirmed gravitational-wave detection based on data from a single observatory.No
GW190412 - LIGO
GW190412. On April 18, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of gravitational waves from a binary black hole merger, labeled GW190412. This is the first binary black hole detection with clear evidence for unequal-masscomponents.
LIGO SCIENTIFIC COLLABORATION Stochastic gravitational waves are the relic gravitational waves from the early evolution of the universe. Much like the Cosmic Micro-wave Background (CMB), which is likely to be the leftover light from the Big Bang, these gravitational waves arise from a large number of random, independent events combining to create a cosmic gravitationalwave background.
LIGO SCIENTIFIC COLLABORATION Inspiral gravitational waves are generated during the end-of-life stage of binary systems where the two objects merge into one. These systems are usually two neutron stars, two black holes, or a neutron star and a black hole whose orbits have degraded to the point that the two masses are about to coalesce. As the two masses rotate around eachWEBHOME < MAIN
Welcome to the LIGOWiki Web Site. Please Log In to see all Web and Topics available to LIGO/VIRGO Community Members. On mobile devices, the new site provides a design optimized for smaller displays that may exclude the list of available wikis normally seen on the left. GWTC-2: AN EXPANDED CATALOG OF GRAVITATIONAL-WAVE … Figure 2: The time-frequency data of event GW190701_203306 before and after glitch subtraction. In this case, scattered light in the LIGO Livingston detector created GWTC-2: 重力波の新しいカタログ 図2: 重力波イベントGW190701 について,グリッチを取り 除く前と後の時間・周波数図.ライゴのリビングストン検出 器では光の散乱によって40 Hz 以下の周波数でノイズの超過 LIGO SCIENTIFIC COLLABORATION LIGO SCIENTIFIC COLLABORATION press releases. Jan 6, 2020. LIGO-Virgo Network Catches Another Neutron Star Collision. Press Release PDF. Additional information at the detection page for GW190425 . Oct 16, 2017. LIGO and Virgo make first detection of gravitational waves produced by colliding neutronstars.
LSC GOVERNANCE
LIGO SCIENTIFIC COLLABORATION What did we find? On April 12, 2019, the LIGO Scientific Collaboration and Virgo Collaboration observed gravitational waves produced by the inspiral and merger of two black holes. This event, dubbed GW190412, was observed with all three detectors operating in the network: both LIGO detectors (one in Hanford, Washington and one in Livingston, Louisiana) as well as the Virgo detector (located in DCC - LIGO DOCUMENT CONTROL CENTER PORTAL Oct-2020: GWTC-2 GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run: Dec-2018: GWTC-1 GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and SecondObserving Runs
LIGO SCIENTIFIC COLLABORATION Masses feel gravitational force because every mass in the universe has its own gravitational field, which adds together with all of the other fields in the universe. According to Newton's theory of gravity, when a mass changes position, the entire gravitational field throughout the universe changes instantaneously, and the resultantWEBHOME < MAIN
Welcome to the LIGOWiki Web Site. Please Log In to see all Web and Topics available to LIGO/VIRGO Community Members. On mobile devices, the new site provides a design optimized for smaller displays that may exclude the list of available wikis normally seen on the left. LIGO SCIENTIFIC COLLABORATION LIGO SCIENTIFIC COLLABORATION Implications For The Origin Of GRB 051103 From LIGO Observations. A recent analysis of observations made by the LIGO detectors has decisively ruled out the collision of two neutron stars or a neutron star and a black hole as being responsible for a gamma-ray burst (GRB) in a nearby galaxy. This result lends credence to the hypothesis that this GRB, observed in late 2005, was really a giant LALSIMULATION: MAIN PAGE LALSimulation. LAL routines for gravitational waveform and noise generation. Acknowledgment. We request that any academic report, publication, or other academic disclosure of results derived from the use of this software acknowledge the use of the software by an appropriate acknowledgment or citation. LIGO SCIENTIFIC COLLABORATION LIGO SCIENTIFIC COLLABORATION press releases. Jan 6, 2020. LIGO-Virgo Network Catches Another Neutron Star Collision. Press Release PDF. Additional information at the detection page for GW190425 . Oct 16, 2017. LIGO and Virgo make first detection of gravitational waves produced by colliding neutronstars.
LSC GOVERNANCE
LIGO SCIENTIFIC COLLABORATION What did we find? On April 12, 2019, the LIGO Scientific Collaboration and Virgo Collaboration observed gravitational waves produced by the inspiral and merger of two black holes. This event, dubbed GW190412, was observed with all three detectors operating in the network: both LIGO detectors (one in Hanford, Washington and one in Livingston, Louisiana) as well as the Virgo detector (located in DCC - LIGO DOCUMENT CONTROL CENTER PORTAL Oct-2020: GWTC-2 GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run: Dec-2018: GWTC-1 GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and SecondObserving Runs
LIGO SCIENTIFIC COLLABORATION Masses feel gravitational force because every mass in the universe has its own gravitational field, which adds together with all of the other fields in the universe. According to Newton's theory of gravity, when a mass changes position, the entire gravitational field throughout the universe changes instantaneously, and the resultantWEBHOME < MAIN
Welcome to the LIGOWiki Web Site. Please Log In to see all Web and Topics available to LIGO/VIRGO Community Members. On mobile devices, the new site provides a design optimized for smaller displays that may exclude the list of available wikis normally seen on the left. LIGO SCIENTIFIC COLLABORATION LIGO SCIENTIFIC COLLABORATION Implications For The Origin Of GRB 051103 From LIGO Observations. A recent analysis of observations made by the LIGO detectors has decisively ruled out the collision of two neutron stars or a neutron star and a black hole as being responsible for a gamma-ray burst (GRB) in a nearby galaxy. This result lends credence to the hypothesis that this GRB, observed in late 2005, was really a giant LALSIMULATION: MAIN PAGE LALSimulation. LAL routines for gravitational waveform and noise generation. Acknowledgment. We request that any academic report, publication, or other academic disclosure of results derived from the use of this software acknowledge the use of the software by an appropriate acknowledgment or citation. LSC - LIGO SCIENTIFIC COLLABORATION Read the September 2020 Issue of LIGO Magazine. Sep 2, 2020. Press release: A “bang” in LIGO and Virgo detectors signals most massive gravitational-wave source yet. Sep 1, 2020. Webinar on latest results from the LIGO-Virgo-Kagra Collaboration. Aug 12, 2020. LIGO detectorsreceive a
DETECTION OF GRAVITATIONAL WAVES Detections. Information about gravitational-wave detections made by LIGO to date. Jump to a separate page for a specific event (listed in reverse-chronological order of announcement date), or see the General Detection Resources section below for further information on LIGO detections.. O3a Catalog (GWTC-2: Summary of detections during the first half of the third observing run.)GW190521 - LIGO
GW190521. On 2 September 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of GW190521, the most massive gravitational wave binary observed to date. The two inspiralling black holes had masses of about 85 and 66 solar masses, and resulted in the formation of a black hole remnant of 142 solarmasses.
LIGO SCIENTIFIC COLLABORATION Glossary: Amplitude and Phase: The two variables describing an electro-magnetic wave: "amplitude" describes the height of the peak of the wave, while the "phase" tells you when the peaks arrive at a certain location. Vacuum state and "zero-point" fluctuations: The "vacuum state" is a state in which there are no sources of light. However, it is still described by an electro-magnetic field which LIGO SCIENTIFIC COLLABORATION The short answer is "yes", but of course this is a crucial question and the LIGO Scientific Collaboration and Virgo Collaboration have together made a huge effort to address it, carrying out a variety of independent and thorough checks. The Hanford and Livingston signals showed a very similar pattern, and were strong enough to 'stand out LIGO SCIENTIFIC COLLABORATION The sensitivity improvement that lead to the discovery was the result of many decades of design and experience with the earlier instruments. Following the detection announcement, the LIGO Scientific Collaboration (LSC) has published a paper, titled "The Sensitivity of the Advanced LIGO Detectors at the Beginning of Gravitational WaveAstronomy
LIGO SCIENTIFIC COLLABORATION A few months after the first detection of gravitational waves from the black hole merger event GW150914, the Laser Interferometer Gravitational-Wave Observatory (LIGO) has made another observation of gravitational waves from the collision and merger of a pair of black holes. This signal, called GW151226, arrived at the LIGO detectors on 26 December 2015 at 03:38:53 UTC. LIGO SCIENTIFIC COLLABORATION Stochastic gravitational waves are the relic gravitational waves from the early evolution of the universe. Much like the Cosmic Micro-wave Background (CMB), which is likely to be the leftover light from the Big Bang, these gravitational waves arise from a large number of random, independent events combining to create a cosmic gravitationalwave background.
LIGO SCIENTIFIC COLLABORATION Views of the Livingston vertex area. Large gate valves are visible above the beam pipes to either side of the chambers. Ion pumps mounted on the beam tube. Inner test mass vacuum chamber with adjacent gate valve. Images are provided by the LIGO Laboratory unless otherwise noted. LIGO Lab images may be used freely in the public domain with MIL-STD-883J W/CHANGE 5 MIL-STD-883J w/CHANGE 5 METHOD 1014.14 7 June 2013 4 2. TEST CONDITIONS. 2.1 Test Conditions A1, A2, and A4 fine leak tracer gas (He). 1/ 2.1.1 Apparatus. Apparatus required shall consist of suitable pressure and vacuum chambers and a mass spectrometer-type Select Language▼* News
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NEWS
Oct 4, 2019
KAGRA to Join LIGO and Virgo in Hunt for Gravitational WavesOct 3, 2019
LIGO's Commissioning Break CommencesSep 4, 2019
Read the September 2019 Issue of LIGO MagazineAug 12, 2019
LIGO's Third Observing Run Started with a Bang!May 2, 2019
LIGO and Virgo Detect Neutron Star Smash-UpsMar 31, 2019
LSC Elects Patrick Brady as New SpokespersonMar 26, 2019
LIGO and Virgo Resume Search for Ripples in Space and TimeMar 20, 2019
Read the March 2019 Issue of LIGO MagazineFeb 27, 2019
O2 data set now availableFeb 15, 2019
LIGO Receives New Funding to Upgrade DetectorsDec 3, 2018
LIGO and Virgo release catalog of gravitational-wave events from first and second observing runsNov 21, 2018
Winners of 2018 Excellence in Detector Characterization and Calibration Award Are AnnouncedNov 1, 2018
LIGO and Virgo Collaborations Working to Make Data and Analysis Techniques Available to AllOct 18, 2018
LIGO Scientists Awarded New Horizons in Physics PrizeOct 16, 2018
"Ripples of Gravity, Flashes of Light" One Year OnOct 3, 2018
LIGO Lab Announces Award for Excellence in Detector Characterization and CalibrationJul 12, 2018
LSC Congratulates our IceCube colleagues on multi-messengerbreakthrough
Apr 24, 2018
Update on the start of LIGO's 3rd observing runMar 21, 2018
Read the March 2018 Issue of LIGO MagazineNov 15, 2017
LIGO and Virgo announce black hole merger detected in June 2017Oct 16, 2017
LIGO and Virgo make first detection of gravitational waves produced by colliding neutron starsOct 11, 2017
MEDIA RELEASE: Scientists to discuss new developments in gravitational-wave astronomyOct 3, 2017
The LSC congratulates Rainer Weiss, Barry Barish, and Kip Thorne on winning the 2017 Nobel Prize in PhysicsSep 27, 2017
LIGO and Virgo make the first joint detection of merging blackholes
Aug 30, 2017
Read the August 2017 Issue of LIGO MagazineAug 25, 2017
A very exciting LIGO-Virgo Observing run is drawing to a closeAugust 25
Aug 1, 2017
Upgraded Virgo joins LIGO during the 2nd observing runJul 20, 2017
LIGO and Virgo Collaborations preparing a brief guide to LIGO detector noise and extraction of gravitational-wave signalsJul 7, 2017
July 2017 update on LIGO's second observing runJun 16, 2017
First triple lock of LIGO and Virgo interferometersJun 1, 2017
LIGO detects third confirmed binary black hole mergerMar 29, 2017
LSC elects David Shoemaker as new spokespersonMar 15, 2017
Read the March 2017 Issue of LIGO MagazineMar 9, 2017
LSC mourns the passing of LIGO co-founder Ronald DreverFeb 3, 2017
Science Summary: Searching for continuous gravitational waves frompulsars
Jan 27, 2017
LIGO Leadership recognized by National Academy of Sciences and American Astronomical Society prizes; LIGO Team recognized by Royal Astronomical SocietyJan 26, 2016
_LIGO Detection_ documentary film to premiere on New Scientist onFebruary 7
Dec 13, 2016
Listening for the background of gravitational waves with AdvancedLIGO
Dec 3, 2016
LIGO to be honored at Special Breakthrough Prize Ceremony on December 4th; watch LIVENov 30, 2016
LIGO Resumes Search for Gravitational WavesNov 29, 2016
What's behind the mysterious gamma-ray bursts? LIGO's search for clues to their originsOct 12, 2016
Gravity Spy Is LaunchedSep 14, 2016
LIGO Celebrates First Anniversary of Gravitational Wave DetectionSep 7, 2016
Advanced LIGO Engineering Team Wins OSA's 2016 Paul F. Forman Team Engineering Excellence AwardSep 6, 2016
LSC Congratulates the LISA Pathfinder Team on the SatelliteMission Success
Jun 21, 2016
Searching for Gravitational Wave Bursts in Coincidence with Short Duration Radio BurstsJun 15, 2016
LIGO announces 2nd confirmed detection of gravitational wavesJun 2, 2016
LIGO founders win The 2016 Kavli Prize in AstrophysicsMay 31, 2016
LIGO founders receive The Shaw Prize in AstronomyMay 16, 2016
LSC Statement on Appropriate Content for Scientific PresentationsMay 4, 2016
LIGO members awarded The 2016 Gruber Prize in CosmologyMay 2, 2016
LIGO members awarded Special Breakthrough Prize in FundamentalPhysics
Apr 20, 2016
The sensitivity of the Advanced LIGO detectors at the beginning of gravitational wave astronomyMar 31, 2016
NSF signs a LIGO-India MoUFeb 24, 2016
LIGO members testify on the discovery at US CongressFeb 17, 2016
LIGO-India approved
Feb 12, 2016
White House Congratulates the LIGO TeamFeb 11, 2016
LIGO announces the detection of gravitational waves ------------------------- See news archive for older newsPRESS RELEASES
MAY 2, 2019
LIGO and Virgo Detect Neutron Star Smash-UpsMAR 26, 2019
LIGO and Virgo Resume Search for Ripples in Space and TimeDEC 3, 2018
LIGO and Virgo Announce Four New Gravitational-Wave DetectionsOCT 16, 2017
LIGO and Virgo make first detection of gravitational waves produced by colliding neutron starsSEP 27, 2017
Gravitational waves from a binary black hole merger observed by LIGOand Virgo
JUN 1, 2017
LIGO Detects Gravitational Waves for Third TimeJUN 15, 2016
Gravitational Waves Detected from Second Pair of Colliding Black HolesFEB 11, 2016
Gravitational Waves Detected 100 Years After Einstein's PredictionGET INVOLVED
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