A dataset provided by the European Space Agency

Proposal ID 006577
Title X-rays from the brightest globular cluster of M31
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0065770101

DOI https://doi.org/10.5270/esa-f6tb4tn
Principal Investigator, PI Prof Frank Verbunt
Abstract We propose to observe G1 (=Mayall II), the brightest and most massive globular cluster of M31. It is an extremely dense and massive globular cluster, an excellent target in which to search for a bright X-ray source. ROSAT did not observe it. The primary goal of our proposal is to determine whether G1 contains an X-ray source, as a pilot observation for a later proposal. If the source is bright we can make a preliminary spectral classification (neutron-star vs. black hole binary) and a preliminary search for orbital variation.It is interesting for theory to know whether this extremely dense clustercontains a bright source; and also which fractions of bright sources areneutron-star binaries and black-hole binaries.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-01-11T03:15:05Z/2001-01-11T05:35:26Z
Version 17.56_20190403_1200
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 2002-10-09T00:00:00Z
Keywords "dense cluster", "M31", "bright sources", "blackhole binary", "preliminary search", "mayall ii", "xray source", "bright source", "brightest globular cluster", "neutron star binary", "orbital variation", "x rays", "ROSAT", "massive globular cluster", "bright xray source"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Frank Verbunt, 2002, 'X-rays from the brightest globular cluster of M31', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-f6tb4tn