Abramowski A, Aharonian F, Benkhali FA, Akhperjanian AG, Anguener E, Anton G, Balenderan S, Balzer A, Barnacka A, Becherini Y, Tjus JB, Bernloehr K, Birsin E, Bissaldi E, Biteau J, Boettcher M, Boisson C, Bolmont J, Bordas P, Brucker J, Brun F, Brun P, Bulik T, Carrigan S, Casanova S, Cerruti M, Chadwick PM, Chalme-Calvet R, Chaves RCG, Cheesebrough A, Chretien M, Colafrancesco S, Cologna G, Conrad J, Couturier C, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dewilt P, Dicldnson HJ, Djannati-Atai A, Domainko W, Drury LO, Dubus G, Dutson K, Dyks J, Dyrda M, Edwards T, Egberts K, Eger P, Espigat P, Farnier C, Fegan S, Feinstein F, Fernandes MV, Fernandez D, Fiasson A, Fontaine G, Foerster A, Fuessling M, Gajdus M, Gallant YA, Garrigoux T, Giebels B, Glicenstein JF, Grondin MH, Grudzinska M, Häffner S, Hahn J, Harris J, Heinzelmann G, Henri G, Hermann G, Hervet O, Hillert A, Hinton JA, Hofmann W, Hofverberg P, Holler M, Horns D, Jacholkowska A, Jahn C, Jamrozy M, Janiak M, Jankowsky F, Jung I, Kastendieck MA, Katarzynski K, Katz U, Kaufmann S, Khelifi B, Kieffer M, Klepser S, Klochkov D, Kluzniak W, Kneiske TM, Kolitzus D, Komin N, Kosack K, Krakau S, Krayzel F, Krueger PP, Laffon H, Lamanna G, Lefaucheur J, Lemiere A, Lemoine-Goumard M, Lenain JP, Lennarz D, Lohse T, Lopatin A, Lu CC, Marandon V, Marcowith A, Marx R, Maurin G, Maxted N, Mayer M, Mccomb TJL, Mehault J, Menzler U, Meyer M, Moderski R, Mohamed M, Moulin E, Murach T, Naumann CL, De Naurois M, Niemiec J, Nolan SJ, Oakes L, O'Brien PT, Ohm S, Wilhelmi EDO, Opitz B, Ostrowski M, Oya I, Panter M, Parsons RD, Arribas MP, Pekeur NW, Pelletier G, Perez J, Petrucci PO, Peyaud B, Pita S, Poon H, Puehlhofer 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 CB, Sahakian V, Sanchez DA, Santangelo A, Schlickeiser R, Schuessler F, Schulz A, Schwanke U, Schwarzburg S, Schwemmer S, Sol H, Spengler G, Spies F, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Stycz K, Sushch I, Szostek A, Tam PHT, Tavernet JP, Tavernier T, Taylor AM, Terrier R, Tluczykont M, Trichard C, Valerius K, van Eldik C, Vasileiadis G, Venter C, Viana A, Vincent P, Voelk HJ, Volpe F, Vorster M, Wagner SJ, Wagner P, Ward M, Weidinger M, Weitzel Q, White R, Wierzcholska A, Willmann P, Wörnlein A, Wouters D, Zacharias M, Zajczyk A, Zdziarski AA, Zech A, Zechlin HS (2014)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2014
Publisher: EDP Sciences
Book Volume: 565
Article Number: A16
DOI: 10.1051/0004-6361/201322984
The long gamma-ray burst (GRB) 100621A, at the time the brightest X-ray transient ever detected by 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 cm s (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. © 2014 ESO.
APA:
Abramowski, A., Aharonian, F., Benkhali, F.A., Akhperjanian, A.G., Anguener, E., Anton, G.,... Zechlin, H.-S. (2014). Search for TeV gamma-ray emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S. Astronomy & Astrophysics, 565. https://dx.doi.org/10.1051/0004-6361/201322984
MLA:
Abramowski, A., et al. "Search for TeV gamma-ray emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S." Astronomy & Astrophysics 565 (2014).
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