Induced Compton Scattering in Gigahertz Peak Spectrum Radio Sources | Zendy

Zdenka Kuncic | Zendy; G. V. Bicknell | Zendy; M. A. Dopita | Zendy

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Induced Compton Scattering in Gigahertz Peak Spectrum Radio Sources

Author(s) -

Zdenka Kuncic,

G. V. Bicknell,

M. A. Dopita

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/311202

Subject(s) - compton scattering , physics , brightness , scattering , astrophysics , spectral line , electromagnetic spectrum , radiation , radio spectrum , astronomy , optics

We revisit the shocked shell model for the class of Active Galactic Nucleiknown as Gigahertz Peak Spectrum sources, incorporating new observational dataon the radiation brightness temperatures. We argue that in addition tofree-free absorption, induced Compton scattering will also have an importanteffect in forming the ~GHz peak and in shaping the radio spectra thatcharacterize these sources. Indeed, our arguments suggest that GPS sources mayprovide the first real evidence for the role of induced Compton scattering inextragalactic radio sources.Comment: 12 pages, 1 figure, AAS LaTeX style with epsf, to appear in ApJ Letter

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