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The γ-ray emission from the Seyfert galaxy NGC 4151
- Source :
- Astrophysics and Space Science; October 1981, Vol. 79 Issue: 2 p469-481, 13p
- Publication Year :
- 1981
-
Abstract
- Light curves at X-ray, ultraviolet, optical and infrared wavelengths of NGC 4151 over the period 1977–1980 are presented together with a summary of the large amount of observational data relating to this Seyfert galaxy. Intensity variations in different wavebands are discussed and compared with recent low energy γ-ray observations of this object. The positive measurement of gamma-radiation in May 1977 is shown to have been characterised by a high optical state and a possible infrared maximum. The data presented are compared with the predictions of some emission mechanisms, which have been proposed to account for the gamma-radiation. In particular, a synchrotron self-Compton model, which relates the infrared/optical emission to the X-ray/low energy γ-ray emission is discussed.
Details
- Language :
- English
- ISSN :
- 0004640X and 1572946X
- Volume :
- 79
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- Astrophysics and Space Science
- Publication Type :
- Periodical
- Accession number :
- ejs16186494
- Full Text :
- https://doi.org/10.1007/BF00649442