Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/61207
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dc.contributor.author | Nicholas, B. | - |
dc.contributor.author | Rowell, G. | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Astronomy and Astrophysics: a European journal, 2010; 511(1):A52-1-A52-13 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.issn | 1432-0746 | - |
dc.identifier.uri | http://hdl.handle.net/2440/61207 | - |
dc.description.abstract | VHE observations of PKS 2005-489 were made with HESS from 2004 through 2007, together with three simultaneous multi-wavelength campaigns performed with XMM-Newton and RXTE in 2004 and 2005. A strong VHE signal, ~17sigma total, is detected during the four years of HESS observations (90.3 hrs live time). The integral flux above the average analysis threshold of 400 GeV is ~3% of the Crab and varies weakly on time-scales from days to years. At X-ray energies the flux is observed to vary by more than an order of magnitude between 2004 and 2005. Strong changes in the X-ray spectrum (DeltaGamma~0.7) are also observed, which appear to be mirrored in the VHE band. The SED of PKS 2005-489, constructed for the first time with contemporaneous data on both humps, shows significant evolution. The large flux variations in the X-ray band, coupled with weak or no variations in the VHE band and a similar spectral behavior, suggest the emergence of a new, separate, harder emission component in September 2005. | - |
dc.description.statementofresponsibility | F. Acero, B. Nicholas, G. Rowell,...and et al, and H.E.S.S. Collaboration. | - |
dc.language.iso | en | - |
dc.publisher | E D P Sciences | - |
dc.rights | Copyright © ESO, 2010. All rights reserved. Submitted to Cornell University’s online archive www.arXiv.org in 2009 by Luigi Costamante.Post-print sourced from www.arxiv.org. | - |
dc.source.uri | http://arxiv.org/abs/0911.2709 | - |
dc.subject | galaxies: active | - |
dc.subject | BL Lacertae objects: individual: PKS 2005-489 | - |
dc.subject | gamma rays: galaxies | - |
dc.subject | X-rays: individuals: PKS 2005-489 | - |
dc.subject | Cosmology and Extragalactic Astrophysics (astro-ph.CO) | - |
dc.title | PKS2005-489 at VHE: four years of monitoring with HESS and simultaneous multi-wavelength observations | - |
dc.type | Journal article | - |
dc.contributor.organisation | H.E.S.S. Collaboration | - |
dc.identifier.doi | 10.1051/0004-6361/200913073 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Rowell, G. [0000-0002-9516-1581] | - |
Appears in Collections: | Aurora harvest 5 Chemistry and Physics publications IPAS publications |
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File | Description | Size | Format | |
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hdl_61207.pdf | Published version | 548.02 kB | Adobe PDF | View/Open |
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