The length-based classification scheme of gamma-ray bursts came under strain when a long (i.e., collapsar-based) gamma-ray burst was found to accompany colliding neutron stars.
The complex rotation of the first interstellar object discovered traversing our solar system continues to inspire research; this work investigates the impact of outgassing from the object’s sub-stellar point.
The longest long-duration gamma-ray bursts may be a good place to look for gas rich in r-process elements: elements that are made in hot, dense environments by the rapid capture of neutrons.
A highly confident detection of polarized X-rays from an accreting, weakly magnetized neutron star has allowed researchers to assess the source’s accretion and X-ray emission mechanisms.
In the search for extraterrestrial intelligence, researchers are interested in Barnard’s star, the second-closest star system to Earth, and have predicted what a signal originating from the system might be like.
Multiwavelength observations suggest that ASASSN-14ko is a repeating tidal disruption event — a star being torn apart bit by bit by a supermassive black hole — but modeling is needed to explore the data further.