2009A&A...495..505A

Query : 2009A&A...495..505A

2009A&A...495..505A - Astronomy and Astrophysics, volume 495, 505-512 (2009/2-4)

HESS observations of γ-ray bursts in 2003-2007.

AHARONIAN F., AKHPERJANIAN A.G., BARRES DE ALMEIDA U., BAZER-BACHI A.R., BEHERA B., BENBOW W., BERNLOEHR K., BOISSON C., BOCHOW A., BORREL V., BRAUN I., BRION E., BRUCKER J., BRUN P., BUEHLER R., BULIK T., BUESCHING I., BOUTELIER T., CARRIGAN S., CHADWICK P.M., CHARBONNIER A., CHAVES R.C.G., CHEESEBROUGH A., CHOUNET L.-M., CLAPSON A.C., COIGNET G., DALTON M., DEGRANGE B., DEIL C., DICKINSON H.J., DJANNATI-ATAIE A., DOMAINKO W., DRURY L.O'C., DUBOIS F., DUBUS G., DYKS J., DYRDA M., EGBERTS K., EMMANOULOPOULOS D., ESPIGAT P., FARNIER C., FEINSTEIN F., FIASSON A., FOERSTER A., FONTAINE G., FUESSLING M., GABICI S., GALLANT Y.A., GERARD L., GIEBELS B., GLICENSTEIN J.F., GLUECK B., GORET P., HADJICHRISTIDIS C., HAUSER D., HAUSER M., HEINZ S., HEINZELMANN G., HENRI G., HERMANN G., HINTON J.A., HOFFMANN A., HOFMANN W., HOLLERAN M., HOPPE S., HORNS D., JACHOLKOWSKA A., DE JAGER O.C., JUNG I., KATARZYNSKI K., KAUFMANN S., KENDZIORRA E., KERSCHHAGGL M., KHANGULYAN D., KHELIFI B., KEOGH D., KOMIN N., KOSACK K., LAMANNA G., LENAIN J.-P., LOHSE T., MARANDON V., MARTIN J.M., MARTINEAU-HUYNH O., MARCOWITH A., MAURIN D., McCOMB T.J.L., MEDINA M.C., MODERSKI R., MOULIN E., NAUMANN-GODO M., DE NAUROIS M., NEDBAL D., NEKRASSOV D., NIEMIEC J., NOLAN S.J., OHM S., OLIVE J.-F., DE ONA WILHELMI E., ORFORD K.J., OSBORNE J.L., OSTROWSKI M., PANTER M., PEDALETTI G., PELLETIER G., PETRUCCI P.-O., PITA S., PUEHLHOFER G., PUNCH M., QUIRRENBACH A., RAUBENHEIMER B.C., RAUE M., RAYNER S.M., RENAUD M., RIEGER F., RIPKEN J., ROB L., ROSIER-LEES S., ROWELL G., RUDAK B., RULTEN C.B., RUPPEL J., SAHAKIAN V., SANTANGELO A., SCHLICKEISER R., SCHOECK F.M., SCHROEDER R., SCHWANKE U., SCHWARZBURG S., SCHWEMMER S., SHALCHI A., SKILTON J.L., SOL H., SPANGLER D., STAWARZ L., STEENKAMP R., STEGMANN C., SUPERINA G., TAM P.H., TAVERNET J.-P., TERRIER R., TIBOLLA O., VAN ELDIK C., VASILEIADIS G., VENTER C., VENTER L., VIALLE J.P., VINCENT P., VIVIER M., VOELK H.J., VOLPE F., WAGNER S.J., WARD M., ZDZIARSKI A.A. and ZECH A.

Abstract (from CDS):

Very-high-energy (VHE; >100GeV) γ-rays are expected from γ-ray bursts (GRBs) in some scenarios. Exploring this photon energy regime is necessary for understanding the energetics and properties of GRBs. GRBs have been one of the prime targets for the HESS experiment, which makes use of four Imaging Atmospheric Cherenkov Telescopes (IACTs) to detect VHE γ-rays. Dedicated observations of 32 GRB positions were made in the years 2003-2007 and a search for VHE γ-ray counterparts of these GRBs was made. Depending on the visibility and observing conditions, the observations mostly start minutes to hours after the burst and typically last two hours.
Result. from observations of 22 GRB positions are presented. Evidence of a VHE signal was found neither in observations of any individual GRBs nor from stacking data from subsets of GRBs with higher expected VHE flux according to a model-independent ranking scheme. Upper limits for the VHE γ-ray flux from the GRB positions were derived. For those GRBs with measured redshifts, differential upper limits at the energy threshold after correcting for absorption due to extra-galactic background light are also presented.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: bursts - gamma rays: observations

Simbad objects: 28

Full paper

View the references in ADS

Number of rows : 28

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Sp type	#ref 1850 - 2023	#notes
1	GRB 070721A	gB	00 12 39.20	-28 33 00.0				~	32	0
2	GRB 070808	gB	00 27 03.40	+01 10 35.4				~	52	0
3	GRB 041006	gB	00 54 50.17	+01 14 07.0				~	193	2
4	GRB 070724A	gB	01 51 14.08	-18 35 38.8				~	168	0
5	3B 940217	gB	01 56.3	+04 33				~	202	0
6	GRB 070721B	gB	02 12 32.98	-02 11 39.8				~	112	0
7	GRB 070209	gB	03 04 51.200	-47 22 34.19				~	42	0
8	SN 2006aj	SN*	03 21 39.670	+16 52 02.27	17.96	19.11	17.40	SNIc-BL	912	1
9	GRB 041211A	gB	06 43 12.0	+20 23 42				~	5	0
10	GRB 041211	gB	06 43 12.0	+20 23 42				~	18	0
11	GRB 041211B	gB	06 43 12.0	+20 23 42				~	5	0
12	GRB 050209	gB	08 26.0	+19 41				~	14	0
13	GRB 030329B	gB	10 44 50.030	+21 31 18.15				~	5	0
14	SN 2003dh	SN*	10 44 50.030	+21 31 18.15			16.2	SNIcpec	1189	1
15	GRB 050509C	gB	12 52 53.940	-44 50 04.10				~	21	0
16	GRB 050726	gB	13 20 11.900	-32 03 51.89			17.58	~	66	0
17	GRB 050801	gB	13 36 35.000	-21 55 41.00	15.03	15.82	15.46	~	154	0
18	GRB 060526	gB	15 31 18.360	+00 17 04.90		18.31	17.16	~	261	0
19	GRB 070612B	gB	17 26 54.180	-08 45 08.90				~	39	0
20	GRB 060403	gB	18 49 21.600	+08 19 46.80				~	44	0
21	SN 1998bw	SN*	19 35 03.17	-52 50 46.1		14.09		SNIc	1778	2
22	GRB 070429A	gB	19 50 48.900	-32 24 17.01				~	38	0
23	GRB 071003	gB	20 07 24.50	+10 56 48.8				~	161	0
24	GRB 070419B	gB	21 02 49.820	-31 15 49.30		20.35		~	75	0
25	GRB 070621	gB	21 35 10.17	-24 49 02.6				~	64	0
26	GRB 030821	gB	21 42 33	-45 12.2				~	10	0
27	GRB 060505	gB	22 07 03.440	-27 48 51.89				~	250	1
28	GRB 061110A	gB	22 25 09.800	-02 15 30.70	21.43			~	124	0

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