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An XMM-Newton Observation of the Seyfert 1 Galaxy 1h 0419-577 in an Extreme Low State (Paperback) Loot Price: R292
Discovery Miles 2 920
You Save: R66 (18%)
An XMM-Newton Observation of the Seyfert 1 Galaxy 1h 0419-577 in an Extreme Low State (Paperback): K.A. Pounds

An XMM-Newton Observation of the Seyfert 1 Galaxy 1h 0419-577 in an Extreme Low State (Paperback)

K.A. Pounds; Created by Nasa Technical Reports Server (Ntrs), et al

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List price R358 Loot Price R292 Discovery Miles 2 920 You Save R66 (18%)

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Previous observations of the luminous Seyfert 1 galaxy 1H 0419-577 have found its X-ray spectrum to range from that of a typical Seyfert 1 with 2-10 keV power law index Gamma approx. 1.9 to a much flatter power law of Gamma approx. 1.5 or less. We report here a new XMM-Newton observation which allows the low state spectrum to be studied in much greater detail than hitherto. We find a very hard spectrum (Gamma approx. 1.0), which exhibits broad features that can be modelled myth the addition of an extreme relativistic Fe K emission line or with partial covering of the underlying continuum by a substantial column density of near-neutral gas. Both the EPIC and RGS data show evidence for strong line emission of OVII and OVIII requiring an extended region of low density photoionised gas in 1H 0419-577. Comparison with an earlier XMM-Newton observation when 1H 0419-577 was 'X-ray bright' indicates the dominant spectral variability occurs via a steep power law component.

General

Imprint: Bibliogov
Country of origin: United States
Release date: August 2013
First published: August 2013
Authors: K.A. Pounds
Creators: Nasa Technical Reports Server (Ntrs) • et al
Dimensions: 246 x 189 x 2mm (L x W x T)
Format: Paperback - Trade
Pages: 28
ISBN-13: 978-1-287-28328-7
Categories: Books > Social sciences > Politics & government > General
LSN: 1-287-28328-4
Barcode: 9781287283287

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