dc.creator | Abramowski, A. | |
dc.creator | Acero, F. | |
dc.creator | Aharonian, Felix A. | |
dc.creator | Akhperjanian, A. G. | |
dc.creator | Anton, G. | |
dc.creator | Medina, Maria Clementina | |
dc.creator | Spengler, G. | |
dc.creator | Stawarz, Ł. | |
dc.creator | Steenkamp, R. | |
dc.creator | Stegmann, C. | |
dc.creator | Stinzing, F. | |
dc.creator | Stycz, K. | |
dc.creator | Sushch, I. | |
dc.creator | Szostek, A. | |
dc.creator | Tavernet, J.-P. | |
dc.creator | Terrier, R. | |
dc.creator | Tluczykont, M. | |
dc.creator | Valerius, K. | |
dc.creator | van Eldik, C. | |
dc.creator | Vasileiadis, G. | |
dc.creator | Venter, C. | |
dc.creator | Viana, A. | |
dc.creator | Vincent, P. | |
dc.creator | Völk, H. J. | |
dc.creator | Volpe, F. | |
dc.creator | Vorobiov, S. | |
dc.creator | Vorster, M. | |
dc.creator | Wagner, S. J. | |
dc.creator | Ward, M. | |
dc.creator | White, R. | |
dc.creator | Wierzcholska, A. | |
dc.creator | Zacharias, M. | |
dc.creator | Zajczyk, A. | |
dc.creator | Zdziarski, A. | |
dc.creator | Zech, A. | |
dc.creator | Zechlin, H.-S. | |
dc.creator | H. E. S. S. Collaboration | |
dc.date.accessioned | 2020-01-03T15:14:21Z | |
dc.date.accessioned | 2022-10-15T00:43:11Z | |
dc.date.available | 2020-01-03T15:14:21Z | |
dc.date.available | 2022-10-15T00:43:11Z | |
dc.date.created | 2020-01-03T15:14:21Z | |
dc.date.issued | 2012-05 | |
dc.identifier | Abramowski, A.; Acero, F.; Aharonian, Felix A. ; Akhperjanian, A. G.; Anton, G.; et al.; Discovery of VHE emission towards the Carina arm region with the H.E.S.S. telescope array: HESS J1018-589; EDP Sciences; Astronomy and Astrophysics; 541; 5-2012; 5-10 | |
dc.identifier | 0004-6361 | |
dc.identifier | http://hdl.handle.net/11336/93385 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4326102 | |
dc.description.abstract | The Carina arm region, containing the supernova remnant SNR G284.3-1.8, the high-energy (HE; E > 100 MeV) binary 1FGL J1018.6-5856 and the energetic pulsar PSR J1016-5857 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 > 0.1 TeV) γ-rays benefits from deep exposure (40 h) of the neighboring open cluster Westerlund 2. The observations have revealed a new extended region of VHE γ-ray emission. The new VHE source HESS J1018-589 shows a bright, point-like emission region positionally coincident with SNR G284.3-1.8 and 1FGL J1018.6-5856 and a diffuse extension towards the direction of PSR J1016-5857. A soft (Γ = 2.7 ± 0.5stat)photon index, with a differential flux at 1 TeV of N0 = (4.2 ± 1.1) × 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 Γ = 2.9 ± 0.4stat and differential flux at 1 TeV of N_0 = (6.8 ± 1.6) × 10^{-13} 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 Γ = 1.65 ± 0.08 in the center of SNR G284.3-1.8, 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 ≈ 0.5 cm-3 (2.9 kpc/d)2. The position of XMMU J101855.4-58564 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 γ-ray emission from HESS J1018-589 and the various potential counterparts in the Carina arm region. | |
dc.language | eng | |
dc.publisher | EDP Sciences | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201218843 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2012/05/aa18843-12/aa18843-12.html | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | Gamma Rays | |
dc.subject | Ism: Individual Objects: Snrg284.3-1.8 | |
dc.subject | Ism: Individual Objects: Psrj1016-5857 | |
dc.subject | Interstellar Medium | |
dc.title | Discovery of VHE emission towards the Carina arm region with the H.E.S.S. telescope array: HESS J1018-589 | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |