Photo-disintegration of heavy nuclei at the core of Cen A

Kundu, Esha; Gupta, Nayantara

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6163

Full metadata record

DC Field	Value	Language
dc.contributor.author	Kundu, Esha	-
dc.contributor.author	Gupta, Nayantara	-
dc.date.accessioned	2015-02-10T06:49:59Z	-
dc.date.available	2015-02-10T06:49:59Z	-
dc.date.issued	2014-04	-
dc.identifier.citation	Journal of Cosmology and Astroparticle Physics, 2014, Vol.4, p04	en
dc.identifier.issn	1475-7516	-
dc.identifier.uri	http://hdl.handle.net/2289/6163	-
dc.description	Open Access	en
dc.description.abstract	Fermi LAT has detected gamma ray emissions from the core of Cen A. More recently, a new component in the gamma ray spectrum from the core has been reported in the energy range of 4 GeV to tens of GeV. We show that the new component and the HESS detected spectrum of gamma rays from the core at higher energy have possibly a common origin in photo-disintegration of heavy nuclei. Assuming the cosmic rays are mostly Fe nuclei inside the core and their spectrum has a low energy cut-off at 52 TeV in the wind frame moving with a Doppler factor 0.25 with respect to the observer on earth, the cosmic ray luminosity required to explain the observed gamma ray flux above 1 GeV is found to be 1.5 × 1043 erg/sec.	en
dc.language.iso	en	en
dc.publisher	IOP Publishing for SISSA	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2014JCAP...04..030K	en
dc.relation.uri	http://arxiv.org/abs/1312.7440	en
dc.relation.uri	http://dx.doi.org/10.1088/1475-7516/2014/04/030	en
dc.rights	IOP Publishing and SISSA	en
dc.subject	Gamma ray thoery	en
dc.subject	cosmic ray theory	en
dc.subject	active galactic nuclei	en
dc.subject	SCOAP3	en
dc.title	Photo-disintegration of heavy nuclei at the core of Cen A	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

Files in This Item:

File	Description	Size	Format
2014_JoCosAP_4_30.pdf	Open Access	1.14 MB	Adobe PDF	View/Open

Show simple item record