| Online-Ressource |
Verfasst von: | Abdalla, Hassan [VerfasserIn]  |
| Bernlöhr, Konrad [VerfasserIn]  |
| Eisenacher Glawion, Dorit [VerfasserIn]  |
| Hinton, James Anthony [VerfasserIn]  |
| Hofmann, Werner [VerfasserIn]  |
| Jankowsky, Felix [VerfasserIn]  |
| Marx, Ramin [VerfasserIn]  |
| Mohamed, Mahmoud [VerfasserIn]  |
| Quirrenbach, Andreas [VerfasserIn]  |
| Rieger, Frank M. [VerfasserIn]  |
| Schwemmer, Stephanie [VerfasserIn]  |
| Wagner, Stefan [VerfasserIn]  |
| Wierzcholska, Alicja [VerfasserIn]  |
Titel: | An extreme particle accelerator in the Galactic plane |
Titelzusatz: | HESS J1826−130 |
Körperschaft: | H.E.S.S. Collaboration [VerfasserIn]  |
Verf.angabe: | H.E.S.S. Collaboration: H. Abdalla, K. Bernlöhr, D. Glawion, J.A. Hinton, W. Hofmann, F. Jankowsky, R. Marx, M. Mohamed, A. Quirrenbach, F. Rieger, S. Schwemmer, S.J. Wagner, A. Wierzcholska, [und 226 weitere] |
E-Jahr: | 2020 |
Jahr: | 07 December 2020 |
Umfang: | 8 S. |
Fussnoten: | Gesehen am 21.01.2021 |
Titel Quelle: | Enthalten in: Astronomy and astrophysics |
Ort Quelle: | Les Ulis : EDP Sciences, 1969 |
Jahr Quelle: | 2020 |
Band/Heft Quelle: | 644(2020) Artikel-Nummer A112, 8 Seiten |
ISSN Quelle: | 1432-0746 |
Abstract: | The unidentified very-high-energy (VHE; <i>E<i/> > 0.1 TeV) <i>γ<i/>-ray source, HESS J1826−130, was discovered with the High Energy Stereoscopic System (HESS) in the Galactic plane. The analysis of 215 h of HESS data has revealed a steady <i>γ<i/>-ray flux from HESS J1826−130, which appears extended with a half-width of 0.21° ± 0.02 ± 0.05 . The source spectrum is best fit with either a power-law function with a spectral index Γ = 1.78 ± 0.10<sub>stat<sub/> ± 0.20<sub>sys<sub/> and an exponential cut-off at 15.2 TeV, or a broken power-law with Γ<sub>1<sub/> = 1.96 ± 0.06<sub>stat<sub/> ± 0.20<sub>sys<sub/>, Γ<sub>2<sub/> = 3.59 ± 0.69<sub>stat<sub/> ± 0.20<sub>sys<sub/> for energies below and above <i>E<i/><sub>br<sub/> = 11.2 ± 2.7 TeV, respectively. The VHE flux from HESS J1826−130 is contaminated by the extended emission of the bright, nearby pulsar wind nebula, HESS J1825−137, particularly at the low end of the energy spectrum. Leptonic scenarios for the origin of HESS J1826−130 VHE emission related to PSR J1826−1256 are confronted by our spectral and morphological analysis. In a hadronic framework, taking into account the properties of dense gas regions surrounding HESS J1826−130, the source spectrum would imply an astrophysical object capable of accelerating the parent particle population up to ≳200 TeV. Our results are also discussed in a multiwavelength context, accounting for both the presence of nearby supernova remnants, molecular clouds, and counterparts detected in radio, X-rays, and TeV energies. |
DOI: | doi:10.1051/0004-6361/202038851 |
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/10.1051/0004-6361/202038851 |
| Volltext: https://www.aanda.org/articles/aa/abs/2020/12/aa38851-20/aa38851-20.html |
| DOI: https://doi.org/10.1051/0004-6361/202038851 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1745169687 |
Verknüpfungen: | → Zeitschrift |
¬An¬ extreme particle accelerator in the Galactic plane / Abdalla, Hassan [VerfasserIn]; 07 December 2020 (Online-Ressource)