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The Astrophysical Journal
Article . 1990 . Peer-reviewed
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https://dx.doi.org/10.1086/168...
Article
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Nonthermal X-ray emission from 3C 273 - The core of a knotty problem?

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1990 English Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 349, page 41 (issn: 0004-637X, eissn: 1538-4357, Copyright policy )
Authors: A. J. Dean; A. Bazzano; A. J. Court; N. A. Dipper; R. A. Lewis; P. Maggioli; F. Perotti; +3 Authors

doi: 10.1086/168291

Nonthermal X-ray emission from 3C 273 - The core of a knotty problem?

Abstract

The quasar 3C 273 was observed in the hard X-ray region of the spectrum (15-300 keV) during a stratospheric balloon flight on July 15, 1987. The emitted photon spectrum is well described by a single power law of photon index -1.61 which corresponds to a hard (20-200 keV) X-ray luminosity of 0.8 x 10 to the 47th ergs/s. This flux is consistent with the 1978/1979 HEAO 1 and AIT/MPI measurements and about a factor of three below the high state measured in 1981 (AIT/MPI). The implications of these results with respect to the location of the production site and mechanism are discussed. 26 refs.

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    		 5
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    		 Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Average
Average
gold
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