A dataset provided by the European Space Agency

Name 055630
Title The extraordinary X-ray source population of NGC 4485 & 4490
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0556300101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0556300201
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0556300301
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0556300401

DOI 10.5270/esa-8af0szb
Author Ms Jeanette Gladstone
Description The interaction of the nearby galaxy pair, NGC 4485 & 4490 (d=7.8 Mpc), has led to enhanced star formation in the galaxies, and hence enhanced X-ray activity. The most remarkable feature of this is a population of at least six ultraluminous X-ray sources (ULXs). Here we propose two new 40-ks XMM-Newton observations, with the primary aim of studying these extraordinary sources. The depth of the proposed observations will be sufficient to place constraints on the presence of a 'cool' disk in their X-ray spectra, and on the presence of short-term variability, whilst extending the baseline of observations to continue long-term spectral and temporal variability studies. We will also detect sufficient counts to study the extensive diffuse X-ray emission of this system.
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Classif...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-05-19T08:29:40Z/2008-06-22T20:27:20Z
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 2009-07-29T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2009-07-29T00:00:00Z, 055630, 17.56_20190403_1200. https://doi.org/10.5270/esa-8af0szb