Spitzer Observations of Binary Neutron Star Merger GW170817
…itself. An isolated point source is clearly visible at the location of GW170817. GW170817 is the name given to a gravitational wave signal seen by the LIGO and Virgo detectors…
Search Results for GW170817
Neutron-Star Merger GW170817 Creates New Mysteries for Astronomers
…questions. The merger, dubbed GW170817, took place 130 million light-years away and was detected in August by the gravitational waves it created. Astronomers then followed it up with conventional telescopes….
Astronomers Discover a Luminous Blue Kilonova, GRB150101B
…few seconds. GW170817 also created ripples in space-time called gravitational waves, suggesting that this might be a common feature of neutron star mergers. The apparent match between GRB150101B and GW170817…
Astronomers May Have Detected a “Sonic Boom” From a Powerful Blast Known as a Kilonova
…black hole that formed after the neutron stars merged. GW170817 would be the first observation of either explanation. “Further study of GW170817 could have far-reaching implications,” said co-author Kate Alexander,…
Hubble Captures Deepest Optical Image of First Neutron Star Collision
…GW170817 was viewed from a 30-degree angle, which had never before been done in the optical wavelength. “GW170817 is the first time we have been able to see the jet…
Extraordinary Cosmic Collision: The Unfolding Story of a Kilonova Told in X-Rays
…associated with GW170817 since shortly after it was first detected in gravitational waves by the Laser Interferometry Gravitational-wave Observatory (LIGO) and Virgo on August 17, 2017. GW170817 was the first…
Astronomers View Light Show Associated With Gravitational Waves
Left: Pre-discovery image of NGC 4993, with an inset showing the future location of the transient. Right: Dark Energy Camera discovery image of the optical counterpart to GW170817. P. Blanchard…
Gravitational-Waves and Nuclear Physics Used to Obtain Best Measurement of Neutron Star Size
…description of the unknown behavior of neutron star matter with multi-messenger observations of the binary neutron star merger GW170817. Their results, which appeared in Nature Astronomy today, are more stringent…
Gravitational Wave Researchers’ Innovative Method to Analyze the Densest Star Systems in the Universe
…both GW170817 and GW190425 by adopting the recycled-slow scheme. It was found that the recycled neutron star in GW170817 is only mildly or even slowly spinning, whereas that of GW190425…
Radioactive Kilonova Glow Suggests Rapid Spin Delayed Collapse of Neutron Stars Into Black Hole
…and help reveal the physics of black hole formation. Until then, GW170817 is the only example available for study. “Further study of GW170817 could have far-reaching implications,” said co-author Kate…
Astronomers Surprised by Lingering X-rays Years After Landmark Neutron Star Collision
…Troja’s team studied — GW170817 — was first identified from gravitational waves detected by the Laser Interferometer Gravitational-wave Observatory and its counterpart Virgo on August 17, 2017. Within hours, telescopes…
Mysterious Kilonova Explosion Afterglow Potentially Spotted for First Time
…merger event, dubbed GW170817. Three-and-a-half years after the merger, the jet faded away, revealing a new source of mysterious X-rays. As the leading explanation for the new X-ray source, astrophysicists…
Origin of the Elements: Heavy Element Born From Neutron Star Collision Detected for First Time
…pointed its telescopes in Chile, including the VLT, to the source: a neutron star merger named GW170817. Astronomers suspected that, if heavier elements did form in neutron star collisions, signatures…
Hubble Observes a Kilonova from Merging Neutron Stars
…the detection of a gravitational wave event named GW170817. About two seconds after the detection of the gravitational wave, ESA’s INTEGRAL telescope and NASA’s Fermi Gamma-ray Space Telescope observed a…
Hubble Spots a Titanic Stellar Collision That Rattles Space and Time
…The explosive event, named GW170817, was observed in August 2017. The blast released energy comparable to that of a supernova explosion. It was the first combined detection of gravitational waves…
Afterglow from Neutron-Star Merger Continues to Puzzle Astrophysicists
Graphic shows the X-ray counterpart to the gravitational wave source GW170817, produced by the merger of two neutron stars. The left image is the sum of observations with NASA’s Chandra…
Astrophysicists Determine New Constraints on Neutron Stars
…waves from merging neutron stars (GW170817) make an important contribution toward solving this puzzle. At the end of 2017, Professor Luciano Rezzolla, Institute for Theoretical Physics at the Goethe University…
NASA Scientists Detect First Light From a Gravitational-Wave Event
…phenomena observed over the course of nine days following the neutron star merger known as GW170817. They include gravitational waves (pale arcs), a near-light-speed jet that produced gamma rays (magenta),…
