A dataset provided by the European Space Agency

Name 069060
Title A new heavyweight champion for stellar mass BHs? XMM and Chandra investigate


DOI 10.5270/esa-4dmhau2
Author Dr Robin Barnard
Description The X-ray source associated with the M31 globular cluster Bo~135 (hereafter XBo 135) may contain the largest stellar mass black hole (BH) to date. It has been observed several times with Chandra and XMM-Newton, and has always exhibited emission spectra characteristic of the BH low state. XBo 135 exhibited this behaviour at ~4-6E+38 erg-s, suggesting a primary mass >50 Solar masses. Possible formation scenarios include stellar mergers in the cluster center, or the direct collapse of a metal poor high mass star. We request 120 ks of XMM-Newton time to investigate the metalicity, and a 5 ks Chandra pointing to accurately locate the source. These observations will test the feasibility of these scenarios; in particular, a high metalicity will rule out direct collapse.
Publication Chandra Identification of 26 New Black Hole Candidates in the Central Region of M31 . Barnard, R., Garcia, M. R., . ApJ . 770-148 . 2013 . 2013ApJ...770..148B ,
The Second Ultraluminous X-Ray Source Transient in M31: Chandra, Hubble Space Telescope, and XMM Observations, and Evidence for an Extended Corona . Barnard, R., Garcia, M., . ApJ . 772-126 . 2013 . 2013ApJ...772..126B ,
The low or retrograde spin of the first extragalactic microquasar: implications for Blandford-Znajek powering of jets . Middleton, Matthew J., Miller-Jones, James C. A., . MNRAS . 439-1740 . 2014 . 2014MNRAS.439.1740M ,
Fifty M31 Black Hole Candidates Identified by Chandra and XMM-Newton . Barnard, R., Garcia, M. R., et all. . ApJ . 791-33 . 2014 . 2014ApJ...791...33B ,
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 ,
XMM-Newton and Chandra Observations of the M31 Globular Cluster Black Hole Candidate XB135: A Heavyweight Contender Cut Down to Size . Barnard, R., Primini, F., et all. . ApJ . 802-85 . 2015 . 2015ApJ...802...85B ,
EXTraS discovery of an 1.2-s X-ray pulsar in M 31 . Esposito, P., Israel, G. L., et all. . MNRAS . 457-5 . 2016 . 2016MNRAS.457L...5E ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . ...,
The Slowest Spinning X-Ray Pulsar in an Extragalactic Globular Cluster . Zolotukhin, Ivan Yu., Bachetti, Matteo, et all. . ApJ . 839-125 . 2017 . 2017ApJ...839..125Z ,
Deep XMM-Newton observations of the northern disc of M31. II. Tracing the hot interstellar medium . Kavanagh, Patrick J., Sasaki, Manami, et all. . A&A . 637-12 . 2020 . 2020A&A...637A..12K ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-06-26T05:23:25Z/2012-06-27T15:22:40Z
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 2013-07-19T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-07-19T00:00:00Z, 069060, 17.56_20190403_1200. https://doi.org/10.5270/esa-4dmhau2