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A close look at the...
A close look at the γ-ray emitting narrow-line seyfert 1 FBQS J1644+2619
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- Larsson, Josefin (författare)
- KTH,Partikel- och astropartikelfysik
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D’Ammando, F. (författare)
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- Falocco, Serena (författare)
- KTH
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visa fler...
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Giroletti, M. (författare)
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Orienti, M. (författare)
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Piconcelli, E. (författare)
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Righini, S. (författare)
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visa färre...
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(creator_code:org_t)
- Sissa Medialab Srl, 2018
- 2018
- Engelska.
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Ingår i: Proceedings of Science. - : Sissa Medialab Srl.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- FBQS J1644+2619 is one of the most recently discovered γ-ray emitting Narrow-Line Seyfert 1s (NLSy1s). Here we present a multiwavelength analysis of this source, focussing on a recent 80 ks X-ray observation with XMM-Newton. The spectral energy distribution of the source is similar to the other γ-ray NLSy1s, confirming its blazar-like nature. The X-ray spectrum is characterised by a hard photon index (Γ = 1.66) above 2 keV and a soft excess at lower energies. The hard photon index provides clear evidence that inverse Compton emission from the jet dominates the spectrum, while the soft excess can be explained by a contribution from the underlying Seyfert emission. This contribution can be fitted by reflection of emission from the base of the jet, as well as by Comptonisation in a warm, optically thick corona. We also compare these results with X-ray observations of other γ-ray NLSy1s. The majority of the sources have similar X-ray spectra, with properties intermediate between blazars and radio-quiet NLSy1s.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Galaxies
- Photons
- X ray spectrographs
- X rays
- Inverse Compton
- Lower energies
- Multiwavelength
- Narrow lines
- Spectral energy distribution
- X ray spectrum
- X-ray observations
- X-ray spectra
- Gamma rays
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)