Kilonova - Wikipedia
WEBA kilonova (also called a macronova) is a transient astronomical event that occurs in a compact binary system when two neutron stars or a neutron star and a black hole merge. These mergers are thought to produce gamma-ray bursts and emit bright electromagnetic radiation, called "kilonovae", due to the radioactive decay of heavy r-process nuclei ...
What are kilonovas? | Space
WEBOct 9, 2023 · A kilonova is a bright blast of electromagnetic radiation that happens when two neutron stars or a neutron star and a stellar-mass black hole collide and merge.
James Webb Space Telescope spots violent collision between …
WEBJul 10, 2023 · The James Webb Space Telescope traced the second-brightest gamma-ray burst ever seen to a kilonova, a collision between two neutron stars.
A nearby kilonova explosion could threaten all life on Earth. But …
WEBOct 30, 2023 · Scientists have determined the possible effects of a neutron star collision happening near Earth, finding that these so-called kilonovas could be real killers that would doom humanity. But don't...
NASA’s Webb Makes First Detection of Heavy Element From Star …
WEBOct 25, 2023 · The highly sensitive infrared capabilities of Webb helped scientists identify the home address of the two neutron stars that created the kilonova: a spiral galaxy about 120,000 light-years away from the site of the merger.
The Unfolding Story of a Kilonova Told in X-rays - NASA
WEBFeb 28, 2022 · Astronomers think that after neutron stars merge, the debris generates visible and infrared light from the decay of radioactive elements like platinum and gold formed in the debris from the merger. This burst of light is called a kilonova.
Massive cosmic explosion creates rare elements in space | CNN
WEBOct 25, 2023 · Multiple telescopes observed a rare cosmic explosion called a kilonova that created heavy elements in space, including some necessary for life.
Kilonova and host galaxy (annotated) | ESA/Webb
WEBOct 25, 2023 · The highly sensitive infrared capabilities of Webb helped scientists identify the home address of the two neutron stars that created the kilonova. This image from Webb’s NIRCam (Near-Infrared Camera) instrument highlights GRB 230307A’s kilonova and its former home galaxy among their local environment of other galaxies and …
Spherical symmetry in the kilonova AT2017gfo/GW170817 | Nature
WEBFeb 15, 2023 · Here we combine the strong Sr+ P Cygni absorption-emission spectral feature and the blackbody nature of kilonova spectrum to determine that the kilonova is highly spherical at early epochs.
A lanthanide-rich kilonova in the aftermath of a long gamma-ray …
WEBFeb 21, 2024 · A modelling analysis shows that an unusually long gamma-ray burst gave rise to a lanthanide-rich kilonova following the merger of a neutron star–neutron star or of a neutron star–black hole.