A dataset provided by the European Space Agency

Name 067280
Title A candidate intermediate-mass black hole in the dwarf starburst galaxy He 2-10
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0672800101

DOI 10.5270/esa-6pxwyt7
Author Dr Ryan Hickox
Description A candidate accreting black hole (BH) with M_BH ~ 10^6 M_sun has recently been identified in the local dwarf starburst galaxy Henize 2-10. This discovery raises the possibility of an entirely new environment for such black holes and has important implications for the overall population of massive BHs and the processes by which "seed" BHs formed and grew in the early Universe. The hard X-ray nucleus of He 2-10 was detected with Chandra in 2001, but its variability properties are completely unknown and its hard X-ray spectrum is not well characterized. We propose a 25 ks XMM exposure to search for variability and for an improved measurement of the X-ray spectrum, in order to test the hypothesis that it is an accreting BH and place some constraints on its mass.
Publication Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
Variable Hard-X-Ray Emission from the Candidate Accreting Black Hole in Dwarf Galaxy Henize 2--10 . Whalen, Thomas J., Hickox, Ryan C., et all. . ApJ . 806-37 . 2015 . 2015ApJ...806...37W ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2011-05-11T06:12:21Z/2011-05-11T13:41:01Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2012-05-26T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-05-26T00:00:00Z, 067280, 17.56_20190403_1200. https://doi.org/10.5270/esa-6pxwyt7