2011ApJ...743...62A

Query : 2011ApJ...743...62A

2011ApJ...743...62A - Astrophys. J., 743, 62 (2011/December-2)

VERITAS observations of gamma-ray bursts detected by Swift.

ACCIARI V.A., ALIU E., ARLEN T., AUNE T., BEILICKE M., BENBOW W., BRADBURY S.M., BUCKLEY J.H., BUGAEV V., BYRUM K., CANNON A., CESARINI A., CHRISTIANSEN J.L., CIUPIK L., COLLINS-HUGHES E., CONNOLLY M.P., CUI W., DUKE C., ERRANDO M., FALCONE A., FINLEY J.P., FINNEGAN G., FORTSON L., FURNISS A., GALANTE N., GALL D., GODAMBE S., GRIFFIN S., GRUBE J., GUENETTE R., GYUK G., HANNA D., HOLDER J., HUGHES G., HUI C.M., HUMENSKY T.B., JACKSON D.J., KAARET P., KARLSSON N., KERTZMAN M., KIEDA D., KRAWCZYNSKI H., KRENNRICH F., LANG M.J., MADHAVAN A.S., MAIER G., McARTHUR S., McCANN A., MORIARTY P., NEWBOLD M.D., ONG R.A., ORR M., OTTE A.N., PARK N., PERKINS J.S., POHL M., PROKOPH H., QUINN J., RAGAN K., REYES L.C., REYNOLDS P.T., ROACHE E., ROSE H.J., RUPPEL J., SAXON D.B., SCHROEDTER M., SEMBROSKI G.H., SENTURK G.D., SMITH A.W., STASZAK D., SWORDY S.P., TESIC G., THEILING M., THIBADEAU S., TSURUSAKI K., VARLOTTA A., VASSILIEV V.V., VINCENT S., VIVIER M., WAKELY S.P., WARD J.E., WEEKES T.C., WEINSTEIN A., WEISGARBER T., WILLIAMS D.A. and WOOD M.

Abstract (from CDS):

We present the results of 16 Swift-triggered Gamma-ray burst (GRB) follow-up observations taken with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) telescope array from 2007 January to 2009 June. The median energy threshold and response time of these observations were 260 GeV and 320 s, respectively. Observations had an average duration of 90 minutes. Each burst is analyzed independently in two modes: over the whole duration of the observations and again over a shorter timescale determined by the maximum VERITAS sensitivity to a burst with a t–1.5 time profile. This temporal model is characteristic of GRB afterglows with high-energy, long-lived emission that have been detected by the Large Area Telescope on board the Fermi satellite. No significant very high energy (VHE) gamma-ray emission was detected and upper limits above the VERITAS threshold energy are calculated. The VERITAS upper limits are corrected for gamma-ray extinction by the extragalactic background light and interpreted in the context of the keV emission detected by Swift. For some bursts the VHE emission must have less power than the keV emission, placing constraints on inverse Compton models of VHE emission.

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Journal keyword(s): astroparticle physics - gamma-ray burst: general

Simbad objects: 22

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Number of rows : 22
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 Fermi bn081024245 gB 01 51 33.80 +61 21 08.2           ~ 75 0
2 GRB 080409 gB 05 37 19.20 +05 05 05.1           ~ 38 0
3 Fermi bn100728095 gB 05 55 02.00 -15 15 20.2           ~ 157 0
4 GRB 080129 gB 07 01 08.13 -07 50 47.8           ~ 85 0
5 GRB 071020 gB 07 58 39.65 +32 51 38.8           ~ 158 0
6 GRB 080916C gB 07 59 23.24 -56 38 16.8           ~ 386 0
7 GRB 090102 gB 08 32 59.50 +33 06 25.7           ~ 253 0
8 GRB 070223 gB 10 13 48.390 +43 08 00.71 21.47         ~ 67 0
9 GRB 090515 gB 10 56 41.0 +14 27 22           ~ 122 0
10 GRB 080330 gB 11 17 06.70 +30 36 24.1           ~ 145 0
11 GRB 070419A gB 12 10 58.830 +39 55 34.06 18.52         ~ 130 0
12 GRB 080607A gB 12 59 47.14 +15 55 09.6           ~ 257 0
13 GRB 090429B gB 14 02 40.10 +32 10 14.6           ~ 166 0
14 GRB 080310 gB 14 40 13.89 -00 10 30.4           ~ 214 0
15 GRB 080604 gB 15 47 51.64 +20 33 28.5           ~ 71 0
16 GRB 070521 gB 16 10 38.600 +30 15 22.70           ~ 164 0
17 GRB 070612B gB 17 26 54.180 -08 45 08.90           ~ 40 0
18 Fermi bn090902462 gB 17 39 45.26 +27 19 28.1           ~ 440 0
19 GRB 090418A gB 17 57 15.17 +33 24 21.1           ~ 101 0
20 GRB 970417A gB 19 21 +54.2           ~ 56 0
21 Fermi bn090510016 G 22 14 12.6230 -26 34 58.550           ~ 548 0
22 Fermi bn090926181 gB 23 33 36.18 -66 19 25.9           ~ 339 0

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