2015MNRAS.446.1163H

Query : 2015MNRAS.446.1163H

2015MNRAS.446.1163H - Mon. Not. R. Astron. Soc., 446, 1163-1169 (2015/January-2)

Discovery of the VHE gamma-ray source HESS J1832-093 in the vicinity of SNR G22.7-0.2.

HESS COLLABORATION, ABRAMOWSKI A., ACERO F., AHARONIAN F., AIT BENKHALI F., AKHPERJANIAN A.G., ANGUNER E., ANTON G., BALENDERAN S., BALZER A., BARNACKA A., BECHERINI Y., BECKER TJUS J., BERNLOHR K., BIRSIN E., BISSALDI E., BITEAU J., BOTTCHER 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., CHRETIEN M., CLAPSON A.-C., COLAFRANCESCO S., COLOGNA G., CONRAD J., COUTURIER C., CUI Y., DALTON M., DANIEL M.K., DAVIDS I.D., DEGRANGE B., DEIL C., DEWILT P., DICKINSON H.J., DJANNATI-ATAI 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., FORSTER A., FUSSLING M., GAJDUS M., GALLANT Y.A., GARRIGOUX T., GIAVITTO G., GIEBELS B., GLICENSTEIN J.F., GRONDIN M.-H., GRUDZINSKA M., HAFFNER 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 M., JANIAK M., JANKOWSKY F., JUNG I., KASTENDIECK M.A., KATARZYNSKI K., KATZ U., KAUFMANN S., KHELIFI B., KIEFFER M., KLEPSER S., KLOCHKOV D., KLUZNIAK W., KNEISKE T., KOLITZUS D., KOMIN N., KOSACK K., KRAKAU S., KRAYZEL F., KRUGER P.P., LAFFON H., LAMANNA G., LEFAUCHEUR J., LEMIERE 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., MEHAULT J., MEINTJES P.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., OHM S., DE ONA WILHELMI E., OPITZ B., OSTROWSKI M., 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., PUHLHOFER 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., SCHUSSLER 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., TAVERNET J.-P., TAVERNIER T., TAYLOR A.M., TERRIER R., TLUCZYKONT M., TRICHARD C., VALERIUS K., VAN ELDIK C., VAN SOELEN B., VASILEIADIS G., VENTER C., VIANA A., VINCENT P., VOLK H.J., VOLPE F., VORSTER M., VUILLAUME T., WAGNER S.J., WAGNER P., WARD M., WEIDINGER M., WEITZEL Q., WHITE R., WIERZCHOLSKA A., WILLMANN P., WORNLEIN A., WOUTERS D., ZABALZA V., ZACHARIAS M., ZAJCZYK A., ZDZIARSKI A.A., ZECH A. and ZECHLIN H.-S.

Abstract (from CDS):

The region around the supernova remnant (SNR) W41 contains several TeV sources and has prompted the HESS Collaboration to perform deep observations of this field of view. This resulted in the discovery of the new very high energy (VHE) source HESS J1832-093, at the position RA=18^h 32^m 50^s ±3^s_stat ±2^s_syst, Dec=-9^○22^′ 36^′′ ±32^′′_stat ±20^′′_syst (J2000), spatially coincident with a part of the radio shell of the neighbouring remnant G22.7-0.2. The photon spectrum is well described by a power law of index Γ = 2.6±0.3stat±0.1syst and a normalization at 1 TeV of Φ_0=(4.8 ±0.8_stat±1.0_syst) × 10^-13 cm ^-2 s^-1 TeV^-1. The location of the gamma-ray emission on the edge of the SNR rim first suggested a signature of escaping cosmic rays illuminating a nearby molecular cloud. Then a dedicated XMM-Newton observation led to the discovery of a new X-ray point source spatially coincident with the TeV excess. Two other scenarios were hence proposed to identify the nature of HESS J1832-093. Gamma-rays from inverse Compton radiation in the framework of a pulsar wind nebula scenario or the possibility of gamma-ray production within a binary system are therefore also considered. Deeper multiwavelength observations will help to shed new light on this intriguing VHE source.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): astroparticle physics - ISM: individual objects: HESS J1832-093 - ISM: individual objects: SNR G22.7-0.2 - gamma-rays: general

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 1 SNR 05 34 30.9 +22 00 53           ~ 6191 1
2 HD 259440 HXB 06 32 59.2566076656 +05 48 01.160755848 9.17 9.63 9.15     B0pe 220 0
3 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 737 1
4 V* V479 Sct HXB 18 26 15.0561548880 -14 50 54.247274304 12.02 12.23 11.27 11.04   ON6V((f))z 571 2
5 2MASS J18324516-0921545 XB* 18 32 45.162 -09 21 54.55           ~ 26 0
6 SNR G022.7-00.2 gam 18 33 15 -09 13.0           ~ 76 1
7 0FGL J1834.4-0841 BL? 18 34 33.6 -08 46 48           ~ 28 0
8 SNR G023.3-00.3 SNR 18 34 51.80 -08 44 38.2           ~ 218 0
9 2MASS J19435624+2118233 Bla 19 43 56.244 +21 18 23.38           ~ 89 3

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