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Search for TeV gamma-ray emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S
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Search for TeV gamma-ray emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S
Bibliographic description
| title: | Search for TeV gamma-ray emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S |
| author: | Abramowski A., Aharonian F., Ait Benkhali F., Akhperjanian A. G., Angüner E., Anton G., Balenderan S., Balzer A., Barnacka Anna  , Becherini Y., Becker Tjus J., Bernlöhr K., Birsin E., Bissaldi E., Biteau J., Böttcher M., Boisson C., Bolmont J., Bordas P., Brucker J., Brun F., Brun P., Bulik T., Carrigan S., Casanova S., Cerruti M., Chadwick P. M., Chalme-Calvet R., Chaves R. C. G., Cheesebrough A., Chrétien M., Colafrancesco S., Cologna G., Conrad J., Couturier C., Dalton M., Daniel M. K., Davids I. D., Degrange B., Deil C., deWilt P., Dickinson H. J., Djannati-Ataï A., Domainko W., Drury L. O’C., Dubus G., Dutson K., Dyks J., Dyrda M., Edwards T., Egberts K., Eger P., Espigat P., Farnier C., Fegan S., Feinstein F., Fernandes M. V., Fernandez D., Fiasson A., Fontaine G., Förster A., Füßling M., Gajdus M., Gallant Y. A., Garrigoux T., Giebels B., Glicenstein J. F., Grondin M.-H., Grudzińska M., Häffner S., Hahn J., Harris J., Heinzelmann G., Henri G., Hermann G., Hervet O., Hillert A., Hinton J. A., Hofmann W., Hofverberg P., Holler M., Horns D., Jacholkowska A., Jahn C., Jamrozy Marek , Janiak M., Jankowsky F., Jung I., Kastendieck M. A., Katarzyński K., Katz U., Kaufmann S., Khélifi B., Kieffer M., Klepser S., Klochkov D., Kluźniak W., Kneiske T., Kolitzus D., Komin Nu., Kosack K., Krakau S., Krayzel F., Krüger P. P., Laffon H., Lamanna G., Lefaucheur J., Lemière A., Lemoine-Goumard M., Lenain J.-P., Lennarz D., Lohse T., Lopatin A., Lu C.-C., Marandon V., Marcowith A., Marx R., Maurin G., Maxted N., Mayer M., McComb T. J. L., Méhault J., Menzler U., Meyer M., Moderski R., Mohamed M., Moulin E., Murach T., Naumann C. L., de Naurois M., Niemiec J., Nolan S. J., Oakes L., O’Brien P. T., Ohm S., de Oña Wilhelmi E., Opitz B., Ostrowski Michał , Oya I., Panter M., Parsons R. D., Paz Arribas M., Pekeur N. W., Pelletier G., Perez J., Petrucci P.-O., Peyaud B., Pita S., Poon H., Pühlhofer G., Punch M., Quirrenbach A., Raab S., Raue M., Reimer A., Reimer O., Renaud M., de los Reyes R., Rieger F., Rob L., Romoli C., Rosier-Lees S., Rowell G., Rudak B., Rulten C. B., Sahakian V., Sanchez D. A., Santangelo A., Schlickeiser R., Schüssler F., Schulz A., Schwanke U., Schwarzburg S., Schwemmer S., Sol H., Spengler G., Spies F., Stawarz Łukasz , Steenkamp R., Stegmann C., Stinzing F., Stycz K., Sushch I., Szostek Anna , Tam P. H. T., Tavernet J.-P., Tavernier T., Taylor A. M., Terrier R., Tluczykont M., Trichard C., Valerius K., van Eldik C., Vasileiadis G., Venter C., Viana A., Vincent P., Völk H. J., Volpe F., Vorster M., Wagner S. J., Wagner P., Ward M., Weidinger M., Weitzel Q., White R., Wierzcholska Alicja , Willmann P., Wörnlein A., Wouters D., Zacharias M., Zajczyk A., Zdziarski A. A., Zech A., Zechlin H.-S. |
| institution: | H.E.S.S. Collaboration |
| journal title: | Astronomy & Astrophysics |
| volume: | 565 |
| date of publication : | 2014 |
| article ID: | A16 |
| ISSN: |
0004-6361 |
| eISSN: |
1432-0746 |
| DOI: | |
| notes: | Reproduced with permission from Astronomy & Astrophysics, © ESO |
| language: | English |
| journal language: | English |
| abstract in English: | The long gamma-ray burst (GRB) 100621A, at the time the brightest X-ray transient ever detected by $\mathit{Swift}$-XRT in the 0.3–10 keV range, has been observed with the H.E.S.S. imaging air Cherenkov telescope array, sensitive to gamma radiation in the very-high-energy (VHE, >100 GeV) regime. Due to its relatively small redshift of z ~ 0.5, the favourable position in the southern sky and the relatively short follow-up time (<700 s after the satellite trigger) of the H.E.S.S. observations, this GRB could be within the sensitivity reach of the H.E.S.S. instrument. The analysis of the H.E.S.S. data shows no indication of emission and yields an integral flux upper limit above $~380 GeV of 4.2 × 10^{-12} cm^{-2} s^{-1}$ (95% confidence level), assuming a simple Band function extension model. A comparison to a spectral-temporal model, normalised to the prompt flux at sub-MeV energies, constraints the existence of a temporally extended and strong additional hard power law, as has been observed in the other bright X-ray GRB 130427A. A comparison between the H.E.S.S. upper limit and the contemporaneous energy output in X-rays constrains the ratio between the X-ray and VHE gamma-ray fluxes to be greater than 0.4. This value is an important quantity for modelling the afterglow and can constrain leptonic emission scenarios, where leptons are responsible for the X-ray emission and might produce VHE gamma rays. |
| keywords in English: | gamma rays: general, gamma-ray burst: individual: GRB 100621A, gamma rays: stars, X-rays: stars |
| affiliation: | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne |
| type: | journal article |
| subtype: | academic paper |
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Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Na tych samych warunkach 4.0 Międzynarodowa
Projekt „Repozytorium otwartego dostępu do dorobku naukowego i dydaktycznego UJ” współfinansowany w ramach poddziałania 2.3.1 „Cyfrowe udostępnianie zasobów nauki” Programu Operacyjnego Polska Cyfrowa z Europejskiego Funduszu Rozwoju Regionalnego i budżetu państwa na podstawie umowy o dofinansowanie nr POPC.02.03.01-00-0030/17-00
