|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Soft X--Ray Properties of Seyfert Galaxies in the Rosat All--Sky Survey | | Brian Rush
; Matthew A. Malkan
; Henner H. Fink
; Wolfgang Voges
; | | Date: |
8 May 1996 | | Subject: | astro-ph | | Affiliation: | UCLA) and Henner H. Fink and Wolfgang Voges (MPE | | Abstract: | We present the results of ROSAT All-Sky Survey observations of Seyfert and IR-luminous galaxies from the Extended 12 Micron Galaxy Sample and the optically-selected CfA Sample. Roughly half of the Seyferts (mostly Seyfert 1s) have been fitted to an absorbed power-law model, yielding an average gamma of 2.26+-0.11 for 43 Seyfert 1s and 2.45+-0.18 for 10 Seyfert 2s, with both types having a median value of 2.3. The soft X-ray (SXR) luminosity correlates with the 12um luminosity, with Seyfert 1s having relatively more SXR emission than Seyfert 2s of similar mid-infrared luminosities, by a factor of 1.6+-0.3. Several physical interpretations of these results are discussed, including the standard unified model for Seyfert galaxies. Infrared-luminous non-Seyferts are shown to have similar distributions of SXR luminosity and X-ray-to-IR slope as Seyfert 2s, suggesting that some of them may harbor obscured active nuclei (as has already been shown to be true for several objects) and/or that the soft X-rays from some Seyferts 2s may be non-nuclear. A SXR luminosity function (XLF) is calculated for the 12um sample, which is well described by a single power-law with a slope of -1.75. The normalization of this XLF agrees well with that of a HXR selected sample. Several of our results, related to the XLF and the X-ray-to-IR relation are shown to be consistent with the HXR observations of the 12um sample by Barcons et al. | | Source: | arXiv, astro-ph/9605031 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER