Ultraluminous X-ray bursts in two ultracompact companions to nearby elliptical galaxies

Jimmy A. Irwin (), W. Peter Maksym, Gregory R. Sivakoff, Aaron J. Romanowsky, Dacheng Lin, Tyler Speegle, Ian Prado, David Mildebrath, Jay Strader, Jifeng Liu and Jon M. Miller
Additional contact information
Jimmy A. Irwin: University of Alabama
W. Peter Maksym: Harvard–Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge
Gregory R. Sivakoff: University of Alberta
Aaron J. Romanowsky: San José State University
Dacheng Lin: Space Science Center, University of New Hampshire
Tyler Speegle: University of Alabama
Ian Prado: University of Alabama
David Mildebrath: University of Alabama
Jay Strader: Michigan State University
Jifeng Liu: Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
Jon M. Miller: The University of Michigan, 1085 South University Avenue

Nature, 2016, vol. 538, issue 7625, 356-358

Abstract: A search of archival X-ray data for 70 nearby galaxies yielded two flaring sources in globular clusters or ultracompact dwarf companions of parent elliptical galaxies.

Date: 2016
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DOI: 10.1038/nature19822

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