XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622
The discovery of the unique source HESS J1507-622 in the very high energy (VHE) range (100 GeV-100 TeV) opened newpossibilities to study the parent population of ultra-relativistic particles found in astrophysical sources and underlined the possibilityof new scenarios/mechanisms crucial for understa...
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| Format: | Journal Article |
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EDP Sciences
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/26635 |
| _version_ | 1848752042040885248 |
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| author | Tibolla, Omar Kaufmann, S. Kosack, K. |
| author_facet | Tibolla, Omar Kaufmann, S. Kosack, K. |
| author_sort | Tibolla, Omar |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The discovery of the unique source HESS J1507-622 in the very high energy (VHE) range (100 GeV-100 TeV) opened newpossibilities to study the parent population of ultra-relativistic particles found in astrophysical sources and underlined the possibilityof 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 theVHE 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 tothe 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 ~6×10-14 erg cm-2 s-1 isreported. Interestingly, a new, variable point-like X-ray source with a flux of ~8×10-14 erg cm-2 s-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. |
| first_indexed | 2025-11-14T08:02:19Z |
| format | Journal Article |
| id | curtin-20.500.11937-26635 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:02:19Z |
| publishDate | 2014 |
| publisher | EDP Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-266352017-09-13T15:28:49Z XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 Tibolla, Omar Kaufmann, S. Kosack, K. Galaxy: general gamma rays: general X-rays: individuals: HESS J1507-622 cosmic rays astroparticle physics The discovery of the unique source HESS J1507-622 in the very high energy (VHE) range (100 GeV-100 TeV) opened newpossibilities to study the parent population of ultra-relativistic particles found in astrophysical sources and underlined the possibilityof 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 theVHE 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 tothe 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 ~6×10-14 erg cm-2 s-1 isreported. Interestingly, a new, variable point-like X-ray source with a flux of ~8×10-14 erg cm-2 s-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. 2014 Journal Article http://hdl.handle.net/20.500.11937/26635 10.1051/0004-6361/201321778 EDP Sciences unknown |
| spellingShingle | Galaxy: general gamma rays: general X-rays: individuals: HESS J1507-622 cosmic rays astroparticle physics Tibolla, Omar Kaufmann, S. Kosack, K. XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 |
| title | XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 |
| title_full | XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 |
| title_fullStr | XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 |
| title_full_unstemmed | XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 |
| title_short | XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622 |
| title_sort | xmm-newton and chandra x-ray follow-up observations of the vhe gamma-ray source hess j1507-622 |
| topic | Galaxy: general gamma rays: general X-rays: individuals: HESS J1507-622 cosmic rays astroparticle physics |
| url | http://hdl.handle.net/20.500.11937/26635 |