Sökning: WFRF:(Nedbal D.) > (2012) > Discovery of VHE em...
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000 | 11245naa a2202737 4500 | |
001 | oai:DiVA.org:lnu-30222 | |
003 | SwePub | |
008 | 131108s2012 | |||||||||||000 ||eng| | |
009 | oai:DiVA.org:su-80082 | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-302222 URI |
024 | 7 | a https://doi.org/10.1051/0004-6361/2012188432 DOI |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-800822 URI |
040 | a (SwePub)lnud (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Abramowski, A.4 aut |
245 | 1 0 | a Discovery of VHE emission towards the Carina arm region with the HESS telescope array :b HESSJ1018-589 |
264 | c 2012-04-18 | |
264 | 1 | b EDP Sciences,c 2012 |
338 | a print2 rdacarrier | |
500 | a AuthorCount:193; | |
520 | a The Carina arm region, containing the supernova remnant SNRG284.3-1.8, the high-energy (HE; E > 100 MeV) binary 1FGL J1018.6-5856 and the energetic pulsar PSRJ1016-5857 and its nebula, has been observed with the H. E. S. S. telescope array. The observational coverage of the region in very-high-energy (VHE; E > 0.1TeV) gamma-rays benefits from deep exposure (40 h) of the neighboring open cluster Westerlund 2. The observations have revealed a new extended region of VHE gamma-ray emission. The new VHE source HESS J1018-589 shows a bright, point-like emission region positionally coincident with SNRG284.3-1.8 and 1FGL J1018.6-5856 and a diffuse extension towards the direction of PSRJ1016-5857. A soft (Gamma = 2.7 +/- 0.5(stat)) photon index, with a differential flux at 1 TeV of N-0 = (4.2 +/- 1.1) x 10(-13) TeV-1 cm(-2) s(-1) is found for the point-like source, whereas the total emission region including the diffuse emission region is well fit by a power-law function with spectral index Gamma = 2.9 +/- 0.4(stat) and differential flux at 1 TeV of N-0 = (6.8 +/- 1.6) x 10(-1)3 TeV-1 cm(-2) s(-1). This H. E. S. S. detection motivated follow-up X-ray observations with the XMM-Newton satellite to investigate the origin of the VHE emission. The analysis of the XMM-Newton data resulted in the discovery of a bright, non-thermal point-like source (XMMU J101855.4-58564) with a photon index of Gamma = 1.65 +/- 0.08 in the center of SNRG284.3-1.8, and a thermal, extended emission region coincident with its bright northern filament. The characteristics of this thermal emission are used to estimate the plasma density in the region as n approximate to 0.5 cm(-3) (2.9 kpc/d)(2). The position of XMMUJ101855.4-58564 is compatible with the position reported by the Fermi-LAT collaboration for the binary system 1FGL J1018.6-5856 and the variable Swift XRT source identified with it. The new X-ray data are used alongside archival multi-wavelength data to investigate the relationship between the VHE gamma-ray emission from HESS J1018-589 and the various potential counterparts in the Carina arm region. | |
650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
653 | a gamma rays: stars | |
653 | a ISM: individual objects: SNRG284.3-1.8 | |
653 | a ISM: individual objects: 1FGL J1018.6-5856 | |
653 | a ISM: individual objects: PSRJ1016-5857 | |
653 | a Astropartikelfysik | |
653 | a Astroparticle Physics | |
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700 | 1 | a Punch, Michaelu Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France4 aut0 (Swepub:lnu)mipuaa |
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710 | 2 | a Univ Paris Diderot, APC, AstroParticule & Cosmology, CNRS,IN2P3,CEA,Irfu, Observ Paris,Sorbonne Paris C, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, Franceb Fysikum4 org |
773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 541, s. A5-q 541<A5-x 0004-6361x 1432-0746 |
856 | 4 | u https://www.aanda.org/articles/aa/pdf/2012/05/aa18843-12.pdf |
856 | 4 | u https://doi.org/10.1051/0004-6361/201218843y Fulltext |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-30222 |
856 | 4 8 | u https://doi.org/10.1051/0004-6361/201218843 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-80082 |
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