Tag Archive for 'Short-duration gamma-ray burst'

A neutron star (blue sphere) spins in the center of a colorful disk of gas, some of which follows the magnetic field (blue lines) and flows (blue-white arcs) onto the object’s surface. Image credit: NASA’s Goddard Space Flight Center Conceptual Image Lab.

Astronomers Discover Short-Lived Superheavy Neutron Stars

Jan 10, 2023 by News Staff

Astronomers have examined data about 700 short gamma-ray bursts (GRBs) detected with NASA’s Neil Gehrels Swift Observatory, Fermi Gamma-ray Space Telescope,...

When neutron stars merge, they can produce radioactive ejecta that powers a kilonova signal, as this conceptual image shows. Image credit: Dreamstime.

Hybrid Neutron-Star Merger Detected for the First Time

Dec 7, 2022 by News Staff

Gamma-ray bursts (GRBs) come in two varieties, long and short. Long GRBs, which last a couple of seconds to one minute, form when a star at least 10 times...

This artist’s conception shows the merger between a neutron star and another star (seen as a disk, lower left) which caused an explosion resulting in SGRB 211106A (white jet, middle), and left behind what astronomers now know to be one of the most luminous afterglows on record (semi-spherical shock wave mid-right); while dust in the host galaxy obscured most of the visible light (shown as colors), millimeter light from the event (depicted in green) was able to escape and reach ALMA. Image credit: ALMA / ESO / NAOJ / NRAO / M. Weiss, NRAO, AUI & NSF.

ALMA Looks at Neutron Star Merger in Millimeter Light

Aug 3, 2022 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have for the first time detected the millimeter afterglow of a short-duration...