Hubble Observes a Kilonova from Merging Neutron Stars
…seen in the galaxy NGC 4993 about 130 million light-years from the Earth, is indeed a kilonova. Such objects are the main source of very heavy chemical elements, such as…
Search Results for NGC 4993
NASA Scientists Detect First Light From a Gravitational-Wave Event
…galaxy NGC 4993, shown in this Hubble Space Telescope image, and located an associated stellar flare called a kilonova. Hubble observed that flare of light fade over the course of…
Origin of the Elements: Heavy Element Born From Neutron Star Collision Detected for First Time
…ESO’s Very Large Telescope shows the changing behavior of the kilonova in the galaxy NGC 4993 over a period of 12 days after the explosion was detected on August 17,…
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…
Spitzer Space Telescope Views the Explosive Merger of Two Neutron Stars
The afterglow of the explosive merger of two neutron stars in the galaxy NGC 4993. Credit: NASA/JPL-Caltech Launched nearly 15 years ago on August 25, 2003, the Spitzer Space Telescope…
Illustration of Two Neutron Stars Just Before They Collide
…a gravitational-wave event, thanks to two merging neutron stars in the galaxy NGC 4993, located about 130 million light-years from Earth in the constellation Hydra. Learn more about this phenomenon….
Afterglow from Neutron-Star Merger Continues to Puzzle Astrophysicists
…is shown to the upper left of its host galaxy, NGC 4993, located about 130 million light-years from Earth. The counterpart has become about four times brighter over three months….
Scientists View Beam of Light From First Confirmed Neutron Star Merger
…confirm a key prediction about the aftermath of neutron star mergers. The binary neutron star merger GW170817 occurred 130 million light-years away in a galaxy named NGC 4993. It was…
Astronomers Surprised by Lingering X-rays Years After Landmark Neutron Star Collision
…event detected in both gravitational waves and the entire spectrum of light. The neutron star collision detected on August 17, 2017, is seen in this image emanating from galaxy NGC…
Gravitational Wave Researchers’ Innovative Method to Analyze the Densest Star Systems in the Universe
…observations of its host galaxy, called NGC 4993, where little star formation activities are found in the past billions of years. OzGrav associate investigator and collaborator Gregory Ashton says: “Our…
Extraordinary Cosmic Collision: The Unfolding Story of a Kilonova Told in X-Rays
…constant level. The Chandra image from data taken in December 2020 and January 2021 shows X-ray emission from GW170817 and from the center of its host galaxy, NGC 4993. A…