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Verfasst von:Tibolla, Omar [VerfasserIn]   i
 Kaufmann, Sarah [VerfasserIn]   i
 Kosack, Karl [VerfasserIn]   i
Titel:XMM-Newton and Chandra X-ray follow-up observations of the VHE gamma-ray source HESS J1507-622
Verf.angabe:O. Tibolla, S. Kaufmann, and K. Kosack
E-Jahr:2014
Jahr:14 July 2014
Umfang:8 S.
Fussnoten:Gesehen am 10.08.2020
Titel Quelle:Enthalten in: Astronomy and astrophysics
Ort Quelle:Les Ulis : EDP Sciences, 1969
Jahr Quelle:2014
Band/Heft Quelle:567(2014) Artikel-Nummer A74, 8 Seiten
ISSN Quelle:1432-0746
Abstract: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.
DOI:doi:10.1051/0004-6361/201321778
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1051/0004-6361/201321778
 Volltext: https://www.aanda.org/articles/aa/abs/2014/07/aa21778-13/aa21778-13.html
 DOI: https://doi.org/10.1051/0004-6361/201321778
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1726670090
Verknüpfungen:→ Zeitschrift

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