A dataset provided by the European Space Agency

Proposal ID 015158
Title X-Ray Emission from the Halo of M31
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DOI https://doi.org/10.5270/esa-gha6emb
Principal Investigator, PI Dr Rosanne Di Stefano
Abstract We request 100 ksec (net) to study the X-ray properties of the halo of M31. Wepropose to observe 10 halo fields for 10 ksec each, covering 1200 kpc^2. XMMwill detect all point sources with luminosities above virgul10^36 ergs/s; we expectto discover 50-150 M31 halo X-ray sources, including X-ray binaries ejected fromGCs, X-ray binaries ejected from the galaxy.s disk, very hot central stars ofplanetary nebulae, and supersoft X-ray binaries. The fields we have choseninclude 27 globular clusters (GCs), which comprise almost 1/3 of all GCs notprojected onto the the galaxy.s optical disk. These observations will testmodels of galactic halo populations, as well as models for the formation ofX-ray binaries in GCs.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-12-29T05:55:31Z/2003-07-01T16:50:48Z
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 2004-08-02T00:00:00Z
Keywords "test models", "xray properties", "M31", "globular cluster gcs", "halo fields", "XMM", "xray binary", "x ray emission", "optical disk", "supersoft xray binary", "planetary nebulae", "galactic halo populations", "hot central stars"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Rosanne Di Stefano, 2004, 'X-Ray Emission from the Halo of M31', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gha6emb