Article (Scientific journals)
Is the bowshock of the runaway massive star HD 195592 a Fermi source?
del Valle, M.; Romero, G.E.; De Becker, Michaël
2013In Astronomy and Astrophysics, 550, p. 112
Peer Reviewed verified by ORBi
 

Files


Full Text
FermiHD195592.pdf
Author preprint (187.27 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Stars: early-type; Radiation processes: non-thermal; Gamma-rays; Stars: massive; Stars: runaways; LiSRI
Abstract :
[en] HD 195592 is an O-type super-giant star, known as a well-established runaway. Recently, a Fermi gamma-ray source (2FGL J2030.7+4417) with a position compatible with that of HD 195592 has been reported. Our goal is to explore the scenario where HD 195592 is the counterpart of the Fermi gamma-ray source modeling the non-thermal emission produced in the bowshock of the runaway star. We calculate the spectral energy distribution of the radiation produced in the bowshock of HD 195592 and we compare it with Fermi observations of 2FGL J2030.7+4417. We present relativistic particle losses and the resulting radiation of the bowshock of HD 195592 and show that the latter is compatible with the detected gamma-ray emission. We conclude that the Fermi source 2FGL J2030.7+4417 might be produced, under some energetic assumptions, by inverse Compton up-scattering of photons from the heated dust in the bowshock of the runaway star. HD 195592 might therefore be the very first object detected belonging to the category of gamma-ray emitting runaway massive stars, whose existence has been recently predicted.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
del Valle, M.
Romero, G.E.
De Becker, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
Is the bowshock of the runaway massive star HD 195592 a Fermi source?
Publication date :
2013
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
550
Pages :
A112
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 December 2012

Statistics


Number of views
92 (30 by ULiège)
Number of downloads
51 (5 by ULiège)

Scopus citations®
 
16
Scopus citations®
without self-citations
7
OpenCitations
 
15

Bibliography


Similar publications



Contact ORBi