Modelling of the Spectral Energy Distribution of Fornax A : Leptonic and Hadronic Production of High Energy Emission from the Radio Lobes
dc.contributor.author | McKinley, B. | |
dc.contributor.author | Yang, R. | |
dc.contributor.author | López-Caniego, M. | |
dc.contributor.author | Briggs, F. | |
dc.contributor.author | Hurley-Walker, N. | |
dc.contributor.author | Wayth, R. B. | |
dc.contributor.author | Offringa, A. R. | |
dc.contributor.author | Crocker, R. | |
dc.contributor.author | Bernardi, G. | |
dc.contributor.author | Procopio, P. | |
dc.contributor.author | Gaensler, B. M. | |
dc.contributor.author | Tingay, S. J. | |
dc.contributor.author | Johnston-Hollitt, M. | |
dc.contributor.author | McDonald, M. | |
dc.contributor.author | Bell, M. | |
dc.contributor.author | Bhat, N. D. R. | |
dc.contributor.author | Bowman, J. D. | |
dc.contributor.author | Cappallo, R. J. | |
dc.contributor.author | Corey, B. E. | |
dc.contributor.author | Deshpande, A. A. | |
dc.contributor.author | Emrich, D. | |
dc.contributor.author | Ewall-Wice, A. | |
dc.contributor.author | Feng, L. | |
dc.contributor.author | Goeke, R. | |
dc.contributor.author | Greenhill, L. J. | |
dc.contributor.author | Hazelton, B. J. | |
dc.contributor.author | Hewitt, J. N. | |
dc.contributor.author | Hindson, L. | |
dc.contributor.author | Jacobs, D. | |
dc.contributor.author | Kaplan, D. L. | |
dc.contributor.author | Kasper, J. C. | |
dc.contributor.author | Kratzenberg, E. | |
dc.contributor.author | Kudryavtseva, N. | |
dc.contributor.author | Lenc, E. | |
dc.contributor.author | Lonsdale, C. J. | |
dc.contributor.author | Lynch, M. J. | |
dc.contributor.author | McWhirter, S. R. | |
dc.contributor.author | Mitchell, D. A. | |
dc.contributor.author | Morales, M. F. | |
dc.contributor.author | Morgan, E. | |
dc.contributor.author | Oberoi, D. | |
dc.contributor.author | Ord, S. M. | |
dc.contributor.author | Pindor, B. | |
dc.contributor.author | Prabu, T. | |
dc.contributor.author | Riding, J. | |
dc.contributor.author | Rogers, A. E. E. | |
dc.contributor.author | Roshi, D. A. | |
dc.contributor.author | Shankar, N. Udaya | |
dc.contributor.author | Srivani, K. S. | |
dc.contributor.author | Subrahmanyan, R. | |
dc.contributor.author | Waterson, M. | |
dc.contributor.author | Webster, R. L. | |
dc.contributor.author | Whitney, A. R. | |
dc.contributor.author | Williams, A. | |
dc.contributor.author | Williams, C. L. | |
dc.date.accessioned | 2017-07-19T16:37:17Z | |
dc.date.available | 2017-07-19T16:37:17Z | |
dc.date.issued | 2015-02-01 | |
dc.identifier.citation | McKinley , B , Yang , R , López-Caniego , M , Briggs , F , Hurley-Walker , N , Wayth , R B , Offringa , A R , Crocker , R , Bernardi , G , Procopio , P , Gaensler , B M , Tingay , S J , Johnston-Hollitt , M , McDonald , M , Bell , M , Bhat , N D R , Bowman , J D , Cappallo , R J , Corey , B E , Deshpande , A A , Emrich , D , Ewall-Wice , A , Feng , L , Goeke , R , Greenhill , L J , Hazelton , B J , Hewitt , J N , Hindson , L , Jacobs , D , Kaplan , D L , Kasper , J C , Kratzenberg , E , Kudryavtseva , N , Lenc , E , Lonsdale , C J , Lynch , M J , McWhirter , S R , Mitchell , D A , Morales , M F , Morgan , E , Oberoi , D , Ord , S M , Pindor , B , Prabu , T , Riding , J , Rogers , A E E , Roshi , D A , Shankar , N U , Srivani , K S , Subrahmanyan , R , Waterson , M , Webster , R L , Whitney , A R , Williams , A & Williams , C L 2015 , ' Modelling of the Spectral Energy Distribution of Fornax A : Leptonic and Hadronic Production of High Energy Emission from the Radio Lobes ' , Monthly Notices of the Royal Astronomical Society , vol. 447 , no. 4 , pp. 3478-3491 . https://doi.org/10.1093/mnras/stu2310 | |
dc.identifier.issn | 1365-2966 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1411.1487v1 | |
dc.identifier.uri | http://hdl.handle.net/2299/18999 | |
dc.description | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2014 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. | |
dc.description.abstract | We present new low-frequency observations of the nearby radio galaxy Fornax A at 154 MHz with the Murchison Widefield Array, microwave flux-density measurements obtained from WMAP and Planck data, and gamma-ray flux densities obtained from Fermi data. We also compile a comprehensive list of previously published images and flux-density measurements at radio, microwave and X-ray energies. A detailed analysis of the spectrum of Fornax A between 154 MHz and 1510 MHz reveals that both radio lobes have a similar spatially-averaged spectral index, and that there exists a steep-spectrum bridge of diffuse emission between the lobes. Taking the spectral index of both lobes to be the same, we model the spectral energy distribution of Fornax A across an energy range spanning eighteen orders of magnitude, to investigate the origin of the X-ray and gamma-ray emission. A standard leptonic model for the production of both the X-rays and gamma-rays by inverse-Compton scattering does not fit the multi-wavelength observations. Our results best support a scenario where the X-rays are produced by inverse-Compton scattering and the gamma-rays are produced primarily by hadronic processes confined to the filamentary structures of the Fornax A lobes. | en |
dc.format.extent | 4557319 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.subject | astro-ph.HE | |
dc.title | Modelling of the Spectral Energy Distribution of Fornax A : Leptonic and Hadronic Production of High Energy Emission from the Radio Lobes | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1093/mnras/stu2310 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true |