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http://hdl.handle.net/2289/6163
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DC Field | Value | Language |
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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 | |
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2014_JoCosAP_4_30.pdf | Open Access | 1.14 MB | Adobe PDF | View/Open |
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