2008ApJ...683..957H

Query : 2008ApJ...683..957H

2008ApJ...683..957H - Astrophys. J., 683, 957-966 (2008/August-3)

Observation of very high energy gamma rays from HESS J1804-216 with CANGAROO-III telescopes.

HIGASHI Y., KUBO H., YOSHIDA T., ENOMOTO R., TANIMORI T., EDWARDS P.G., NAITO T., BICKNELL G.V., CLAY R.W., GUNJI S., HARA S., HARA T., HATTORI T., HAYASHI S., HIRAI Y., INOUE K., KABUKI S., KAJINO F., KATAGIRI H., KAWACHI A., KIFUNE T., KIUCHI R., KUSHIDA J., MATSUBARA Y., MIZUKAMI T., MIZUMOTO Y., MIZUNIWA R., MORI M., MURAISHI H., MURAKI Y., NAKAMORI T., NAKANO S., NISHIDA D., NISHIJIMA K., OHISHI M., SAKAMOTO Y., SEKI A., STAMATESCU V., SUZUKI T., SWABY D.L., THORNTON G., TOKANAI F., TSUCHIYA K., WATANABE S., YAMADA Y., YAMAZAKI E., YANAGITA S., YOSHIKOSHI T. and YUKAWA Y.

Abstract (from CDS):

We observed the unidentified TeV gamma-ray source HESS J1804-216 with the CANGAROO-III atmospheric Cerenkov telescopes from 2006 May to July. We detected very high energy gamma rays above 600 GeV at the 10 σ level in an effective exposure of 76 hr. We obtained a differential flux of (5.0±1.5stat±1.6sys)x10–12(E/1 TeV)–α/cm2/s/TeV with a photon index α of 2.69±0.30stat±0.34sys, which is consistent with that of the H.E.S.S. observation in 2004. We also confirm the extended morphology of the source. By combining our result with multiwavelength observations, we discuss the possible counterparts of HESS J1804-216 and the radiation mechanism based on leptonic and hadronic processes for a supernova remnant and a pulsar wind nebula.

Abstract Copyright: ∼

Journal keyword(s): Gamma Rays: Observations - ISM: individual (G8.7-0.1) - ISM: individual (HESS J1804-216) - pulsars: individual (PSR B1800-21) - X-rays: individual (Suzaku J1804-2140) - X-rays: individual (Suzaku J1804-2142)

Simbad objects: 14

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Number of rows : 14
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 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
2 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 576 0
3 NAME Vela X Psr 08 33 08.880 -45 11 24.36           ~ 302 1
4 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
5 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
6 PSR B1800-21 Psr 18 03 51.40000 -21 37 07.0000           ~ 278 1
7 1AGLR J1807-2103 gam 18 03 52.1 -21 10 54           ~ 79 0
8 SRBY 3 MoC 18 04.2 -21 46           ~ 4 0
9 Suzaku J1804-2140 X 18 04 34.0 -21 40 20           ~ 5 1
10 SNR G008.3-00.0 SNR 18 04.6 -21 49           ~ 27 1
11 Suzaku J1804-2142 X 18 04 44.0 -21 42 42           ~ 5 1
12 W 30 SNR 18 05 31.2011719 -21 25 48.001099           ~ 188 1
13 PSR B1823-13 Psr 18 26 13.06 -13 34 48.1           ~ 460 1
14 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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