Document Type
Article
Publication Date
10-20-2016
Publication Title
Nature
Volume
538
First Page
356
Last Page
358
DOI
10.1038/nature19822
Keywords
Galaxies and clusters, High-energy astrophysics
Disciplines
Astrophysics and Astronomy | External Galaxies
Abstract
A search of archival X-ray data for 70 nearby galaxies has yielded two flaring sources in globular clusters or ultracompact dwarf companions of parent elliptical galaxies. One source flared once, and the other five times. When not flaring, these sources appear to be normal accreting neutron-star or black-hole X-ray binaries. Unlike magnetars and other bodies that produce repetitive flares of similar luminosity, they are located in old stellar populations.
Recommended Citation
Jimmy Irwin, W. Maksym, Gregory Sivakoff, Aaron Romanowsky, Dacheng Lin, Tyler Speegle, Ian Prado, David Mildebrath, Jay Strader, Jifeng Liu, and Jon Miller. "Ultraluminous X-ray bursts in two ultracompact companions to nearby elliptical galaxies" Nature (2016): 356-358. https://doi.org/10.1038/nature19822
Comments
This is the Accepted Manuscript of an article that was published in Nature, volume 538, 2016. The Version of Record is available online at this link: http://dx.doi.org/10.1038/nature19822 SJSU users: use the following link to login and access the article via SJSU databases.