XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622
Context: The discovery of the unique source HESS J1507-622 in the very high energy (VHE) range (100 GeV−100 TeV) opened new possibilities to study the parent population of ultra-relativistic particles found in astrophysical sources and underlined the possibility of new scenarios/mechanisms crucial f...
Gespeichert in:
| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
14 July 2014
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| In: |
Astronomy and astrophysics
Year: 2014, Jahrgang: 567 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201321778 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/201321778 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2014/07/aa21778-13/aa21778-13.html 
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| Verfasserangaben: | O. Tibolla, S. Kaufmann, and K. Kosack |
MARC
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| 245 | 1 | 0 | |a XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 |c O. Tibolla, S. Kaufmann, and K. Kosack |
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| 520 | |a Context: The discovery of the unique source HESS J1507-622 in the very high energy (VHE) range (100 GeV−100 TeV) opened new possibilities to study the parent population of ultra-relativistic particles found in astrophysical sources and underlined the possibility of new scenarios/mechanisms crucial for understanding the underlying astrophysical processes in nonthermal sources. Aims: The follow-up X-ray (0.2−10 keV) observations on HESS J1507-622 are reported, and possibilities regarding the nature of the VHE source and that of the newly discovered X-ray sources are investigated. Methods: We obtained observations with the X-ray satellites XMM-Newton and Chandra. Background corrections were applied to the data to search for extended diffuse emission. Since HESS J1507-622 covers a large part of the field of view of these instruments, blank-sky background fields were used. Results: The discovery of several new X-ray sources and a new, faint, extended X-ray source with a flux of ~ 6 × 10-14ergcm-2s-1 is reported. Interestingly, a new, variable point-like X-ray source with a flux of ~ 8 × 10-14ergcm-2s-1 appeared in the 2011 observation, which was not detected in the previous X-ray observations. Conclusions: The X-ray observations revealed a faint, extended X-ray source that may be a possible counterpart for HESS J1507-622. This source could be an X-ray pulsar wind nebula (PWN) remnant of the larger gamma-ray PWN, which is still bright in IC emission. Several interpretations are proposed to explain the newly detected variable X-ray source. | ||
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| 700 | 1 | |a Kosack, Karl |e VerfasserIn |0 (DE-588)1215506244 |0 (DE-627)1726672042 |4 aut | |
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