Search: onr:"swepub:oai:DiVA.org:kth-268520" >
A close look at the...
-
Larsson, JosefinKTH,Partikel- och astropartikelfysik
(author)
A close look at the γ-ray emitting narrow-line seyfert 1 FBQS J1644+2619
- Article/chapterEnglish2018
Publisher, publication year, extent ...
-
Sissa Medialab Srl,2018
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:kth-268520
-
https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-268520URI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:kon swepub-publicationtype
Notes
-
QC 20200310
-
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.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
D’Ammando, F.
(author)
-
Falocco, SerenaKTH(Swepub:kth)u1jmz1as
(author)
-
Giroletti, M.
(author)
-
Orienti, M.
(author)
-
Piconcelli, E.
(author)
-
Righini, S.
(author)
-
KTHPartikel- och astropartikelfysik
(creator_code:org_t)
Related titles
-
In:Proceedings of Science: Sissa Medialab Srl
Internet link
To the university's database