A dataset provided by the European Space Agency

Name: A PARTICULAR BROAD FLUORESCENT IRON K ALPHA LINE IN THE SEYFERT2 GALAXY NGC 7172
Published: 2005-12-08T00:00:00Z

Proposal ID	020286
Title	A PARTICULAR BROAD FLUORESCENT IRON K ALPHA LINE IN THE SEYFERT2 GALAXY NGC 7172
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0202860101
DOI	https://doi.org/10.5270/esa-j5cteq6
Principal Investigator, PI	Dr NORBERT SCHARTEL
Abstract	Our AO-2 observation of the Seyfert 2 galaxy NGC 7172 (of 12.5 ksec) shows abroad fluorescent iron K alpha line. Given the shape of the line andreverberation mappings of BeppoSax a relativistic disk emission as well as aCompton shoulder seems very unlikely. Most probably the line profile is causedby Doppler broadening, which would allow to place the emission region in theouter broad line region or the inner part of the molecular torus. The proposed60 ksec observation will allow to undoubtedly discriminate between the variousemission scenarios and may will allow us to determine the emission region.
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Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2004-11-11T07:43:32Z/2004-11-12T00:05:30Z
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	2005-12-08T00:00:00Z
Keywords	"line profile", "doppler broadening", "undoubtedly discriminate", "reverberation mappings", "emission region", "compton shoulder", "molecular torus", "NGC 7172", "broad fluorescent iron", "galaxy ngc 7172", "relativistic disk emission", "alpha line", "emission scenarios"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr NORBERT SCHARTEL, 2005, 'A PARTICULAR BROAD FLUORESCENT IRON K ALPHA LINE IN THE SEYFERT2 GALAXY NGC 7172', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-j5cteq6