2008A&A...490..685A

Query : 2008A&A...490..685A

2008A&A...490..685A - Astronomy and Astrophysics, volume 490, 685-693 (2008/11-1)

Discovery of a VHE gamma-ray source coincidentwith the supernova remnant CTB 37A.

AHARONIAN F., AKHPERJANIAN A.G., BARRES DE ALMEIDA U., BAZER-BACHI A.R., BEHERA B., BEILICKE M., BENBOW W., BERNLOEHR K., BOISSON C., BORREL V., BRAUN I., BRION E., BRUCKER J., BUEHLER R., BULIK T., BUESCHING I., BOUTELIER T., CARRIGAN S., CHADWICK P.M., CHAVES R., CHOUNET L.-M., CLAPSON A.C., COIGNET G., CORNILS R., COSTAMANTE L., DALTON M., DEGRANGE B., DICKINSON H.J., DJANNATI-ATAIE A., DOMAINKO W., DRURY L.O'C., DUBOIS F., DUBUS G., DYKS J., EGBERTS K., EMMANOULOPOULOS D., ESPIGAT P., FARNIER C., FEINSTEIN F., FIASSON A., FOERSTER A., FONTAINE G., FUNK S., FUESSLING M., GABICI S., GALLANT Y.A., GIEBELS B., GLICENSTEIN J.F., GLUECK B., GORET P., HADJICHRISTIDIS C., HAUSER D., HAUSER M., 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., LATHAM I.J., LEMOINE-GOUMARD M., LENAIN J.-P., LOHSE T., MARTIN J.M., MARTINEAU-HUYNH O., MARCOWITH A., MASTERSON C., MAURIN D., McCOMB T.J.L., MODERSKI R., MOULIN E., NAKAJIMA H., NAUMANN-GODO M., DE NAUROIS M., NEDBAL D., NEKRASSOV D., NOLAN S.J., OHM S., OLIVE J.-P., 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., REIMER O., RENAUD M., RIEGER F., RIPKEN J., ROB L., ROSIER-LEES S., ROWELL G., RUDAK 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., 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):

The supernova remnant (SNR) complex CTB 37 is an interesting candidate for observations with very high energy (VHE) γ-ray telescopes such as HESS. In this region, three SNRs are seen. One of them is potentially associated with several molecular clouds, a circumstance that can be used to probe the acceleration of hadronic cosmic rays. This region was observed with the HESS Cherenkov telescopes and the data were analyzed with standard HESS procedures. Recent X-ray observations with Chandra and XMM-Newton were used to search for X-ray counterparts. The discovery of a new VHE γ-ray source HESS J1714-385 coincident with the remnant CTB 37A is reported. The energy spectrum is well described by a power-law with a photon index of Γ=2.30±0.13 and a differential flux at 1TeV of Φ0=(8.7±1.0stat±1.8sys)x10–13/cm2/s/TeV. The integrated flux above 1 TeV is equivalent to 3% of the flux of the Crab nebula above the same energy. This VHE γ-ray source is a counterpart candidate for the unidentified EGRET source 3EG J1714-3857. The observed VHE emission is consistent with the molecular gas distribution around CTB 37A; a close match is expected in a hadronic scenario for γ-ray production. The X-ray observations reveal the presence of thermal X-rays from the NE part of the SNR. In the NW part of the remnant, an extended non-thermal X-ray source, CXOU J171419.8-383023, is discovered as well. Possible connections of the X-ray emission to the newly found VHE source are discussed.

Abstract Copyright: ∼

Journal keyword(s): ISM: supernova remnants - gamma rays: observations - X-rays: individual: G348.5+0.1

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 - 2024 		#notes
1 M 1 SNR 05 34 30.9 +22 00 53           ~ 6198 1
2 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1237 1
3 PSR B1509-58 Psr 15 13 55.52 -59 08 08.8     13.06     ~ 845 1
4 1FGL J1711.7-3944c BL? 17 12 27 -39 41.2     12.27     ~ 724 1
5 SNR G348.7+00.3 SNR 17 13 43.0 -38 10 12           ~ 121 2
6 HESS J1713-381 gam 17 13 51.20353 -38 13 13.5700           ~ 30 1
7 CXOU J171411.6-382831 X 17 14 11.6 -38 28 31           ~ 1 0
8 2MASS J17141228-3829324 X 17 14 12.2868064704 -38 29 32.467514208           ~ 1 0
9 CXOU J171419.8-383023 X 17 14 19.0 -38 30 23           ~ 11 0
10 2CXO J171428.6-383601 X 17 14 28.59 -38 36 01.6           ~ 4 0
11 SNR G348.5+00.1 SNR 17 14 31.780 -38 28 34.50           ~ 220 3
12 CXOU J171440.4-383150 X 17 14 40.49 -38 31 50.3           ~ 1 0
13 CXOU J171441.4-382903 X 17 14 41.40 -38 29 03.5           ~ 1 0
14 CXOU J171455.6-382559 X 17 14 55.67 -38 25 59.7           ~ 1 0
15 CXOU J171459.8-383356 X 17 14 59.81 -38 33 56.1           ~ 1 0
16 CXOU J171527.0-383553 * 17 15 02.6644459080 -38 35 53.150278848           ~ 1 0
17 GRS G348.50 -00.00 Rad 17 15 -38.5           ~ 10 0
18 CXOU J171505.7-382519 X 17 15 05.75 -38 25 19.8           ~ 1 0
19 CXOU J171559.0-383816 X 17 15 05.8492668960 -38 38 17.503468944           ~ 1 0
20 CXOU J171506.0-383348 X 17 15 06.63 -38 33 48.0           ~ 1 0
21 CXOU J171515.2-382724 X 17 15 15.2357301144 -38 27 24.227720748           ~ 1 0
22 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 738 1

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