2011A&A...525A..45A

Query : 2011A&A...525A..45A

2011A&A...525A..45A - Astronomy and Astrophysics, volume 525A45-45 (2011/1-1)

Discovery and follow-up studies of the extended, off-plane, VHE gamma-ray source HESS J1507-622.

ACERO F., AHARONIAN F., AKHPERJANIAN A.G., ANTON G., BARRES DE ALMEIDA U., BAZER-BACHI A.R., BECHERINI Y., BEHERA B., BERNLOEHR K., BOCHOW A., BOISSON C., BOLMONT J., BORREL V., BRUCKER J., BRUN F., BRUN P., BUEHLER R., BULIK T., BUESCHING I., BOUTELIER T., CHADWICK P.M., CHARBONNIER A., CHAVES R.C.G., CHEESEBROUGH A., CHOUNET L.-M., CLAPSON A.C., COIGNET G., DALTON M., DANIEL M.K., DAVIDS I.D., 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., FUESLING M., GABICI S., GALLANT Y.A., GERARD L., GERBIG D., GIEBELS B., GLICENSTEIN J.F., GLUECK B., GORET P., GOERING D., 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., JAHN C., JUNG I., KATARZYNSKI K., KATZ U., KAUFMANN S., KERSCHHAGGL M., KHANGULYAN D., KHELIFI B., KEOGH D., KLOCHKOV D., KLUZNIAK W., KNEISKE T., KOMIN N., KOSACK K., KOSSAKOWSKI R., LAMANNA G., LENAIN J.-P., LOHSE T., MARANDON V., MARTINEAU-HUYNH O., MARCOWITH A., MASBOU J., MAURIN D., McCOMB T.J.L., MEDINA M.C., MEHAULT J., MODERSKI R., MOULIN E., NAUMANN-GODO M., DE NAUROIS M., NEDBAL D., NEKRASSOV D., NICHOLAS B., NIEMIEC J., NOLAN S.J., OHM S., OLIVE J.-F., DE ONA WILHELMI E., ORFORD K.J., OSTROWSKI M., PANTER M., PAZ ARRIBAS 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., RULTEN C.B., RUPPEL J., SAHAKIAN V., SANTANGELO A., SCHLICKEISER R., SCHOECK F.M., SCHWANKE U., SCHWARZBURG S., SCHWEMMER S., SHALCHI A., SIKORA M., SKILTON J.L., SOL H., STAWARZ L., STEENKAMP R., STEGMANN C., STINZING F., SUPERINA G., SZOSTEK A., TAM P.H., TAVERNET J.-P., TERRIER R., TIBOLLA O., TLUCZYKONT M., 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., ZECH A. (The HESS Collaboration)

Abstract (from CDS):

The detection of gamma-rays in the very-high-energy (VHE) range (100GeV-100TeV) offers the possibility of studying the parent population of ultrarelativistic particles found in astrophysical sources, so it is useful for understanding the underlying astrophysical processes in nonthermal sources. The discovery of the VHE gamma-ray source HESS J1507-622 is reported and possibilities regarding its nature are investigated. The H.E.S.S. array of imaging atmospheric Cherenkov telescopes (IACTs) has a high sensitivity compared with previous instruments (∼1% of the Crab flux in 25 h observation time for a 5σ point-source detection) and has a large field of view (∼5° in diameter). HESS J1507-622 was discovered within the ongoing H.E.S.S. survey of the inner Galaxy, and the source was also studied by means of dedicated multiwavelength observations. A Galactic gamma-ray source, HESS J1507-622, located ∼3.5° from the Galactic plane was detected with a statistical significance >9σ. Its energy spectrum is well fitted by a power law with spectral index Γ=2.24±0.16stat±0.20sys and a flux above 1TeV of (1.5 ±0.4stat±0.3sys)x10–12/cm2/s. Possible interpretations (considering both hadronic and leptonic models) of the VHE gamma-ray emission are discussed in the absence of an obvious counterpart.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: general - X-rays: general

Simbad objects: 57

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Number of rows : 57
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 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
2 PSR J0633+1746 Psr 06 33 54.153 +17 46 12.91           ~ 1308 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 PSR J1301-6305 Psr 13 02 47.9992676 -63 10 48.001099           ~ 139 2
6 PSR J1357-6429 Psr 13 57 02.525 -64 29 29.89           ~ 171 1
7 HESS J1427-608 gam 14 27 52.0 -60 51 00           ~ 25 1
8 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1407 1
9 1RXS J150354.7-620408 X 15 03 54.7 -62 04 08           ~ 2 0
10 2MASS J15053757-6220015 * 15 05 37.5781946400 -62 20 01.564711296   18.4 17.83 17.03 16.19 ~ 1 0
11 CXOU J150538.1-622001 X 15 05 38.114 -62 20 01.35           ~ 1 0
12 CXOU J150606.7-622210 X 15 06 06.799 -62 22 10.36           ~ 2 0
13 2MASS J15060774-6222092 NIR 15 06 07.749 -62 22 09.24         17.04 ~ 1 0
14 TYC 9024-1615-1 * 15 06 21.4272436968 -62 11 10.960243332   11.142 10.580 10.525 9.91 ~ 2 0
15 CXOU J150621.7-621110 X 15 06 21.789 -62 11 10.76           ~ 2 0
16 CXOU J150636.9-621628 X 15 06 36.935 -62 16 28.47           ~ 2 0
17 1RXS J150639.1-615704 X 15 06 39.1 -61 57 04           ~ 3 0
18 CXOU J150645.7-621648 X 15 06 45.788 -62 16 48.10           ~ 1 0
19 2MASS J15064587-6216466 * 15 06 45.872 -62 16 46.68         17.54 ~ 1 0
20 GSC2.3 S7QP031426 * 15 06 53.597 -62 30 34.44       19.51 16.83 ~ 1 0
21 2MASS J15065363-6230347 * 15 06 53.6571077520 -62 30 34.720789572         17.65 ~ 1 0
22 GSC2.3 S7QP001419 * 15 06 53.660 -62 30 41.70   19.72 17.78 16.76 16.02 ~ 1 0
23 2MASS J15065368-6230417 NIR 15 06 53.6881739952 -62 30 41.782775400         15.98 ~ 1 0
24 2MASS J15065496-6230425 * 15 06 54.9564370584 -62 30 42.629767344       20.10   ~ 1 0
25 2MASS J15065613-6230553 NIR 15 06 56.0685431592 -62 30 55.561505616           ~ 1 0
26 CXOU J150656.1-623040 X 15 06 56.128 -62 30 40.72           ~ 2 0
27 2MASS J15065721-6230287 * 15 06 57.219 -62 30 28.73       20.30 17.44 ~ 1 0
28 2MASS J15065736-6230444 * 15 06 57.363 -62 30 44.50       20.22   ~ 1 0
29 GSC2.3 S7QP031294 * 15 06 57.412 -62 30 57.94   21.97   19.86   ~ 1 0
30 2MASS J15065746-6230579 * 15 06 57.4576538136 -62 30 58.074011748           ~ 1 0
31 CXOU J150706.7-621858 X 15 07 06.746 -62 18 58.75           ~ 2 0
32 2MASS J15070693-6218560 NIR 15 07 06.934 -62 18 56.10         17.38 ~ 1 0
33 GSC2.3 S7QP060692 * 15 07 07.291 -62 18 57.70         16.22 ~ 1 0
34 UCAC3 56-316134 * 15 07 08.8005014256 -62 16 43.964274432       13.85   ~ 3 0
35 TYC 9024-1705-1 * 15 07 08.8061326848 -62 16 40.698599124   11.98 11.66 11.23 10.87 ~ 3 0
36 CXOU J150718.5-621357 X 15 07 18.516 -62 13 57.22           ~ 1 0
37 GSC2.3 S7QP005118 * 15 07 18.516 -62 13 57.19     14.69 13.94 13.18 ~ 1 0
38 UCAC3 56-316221 * 15 07 18.5397488592 -62 13 57.131140872       14.49 12.85 ~ 1 0
39 HESS J1507-622 gam 15 07 30 -62 25.0           ~ 34 0
40 2MASS J15075188-6215057 NIR 15 07 51.889 -62 15 05.74           ~ 1 0
41 CXOU J150752.0-621509 X 15 07 52.091 -62 15 09.96           ~ 1 0
42 GSC2.3 S7QP004587 * 15 07 52.192 -62 15 10.50     16.20 15.56 14.37 ~ 1 0
43 UCAC3 56-316462 * 15 07 52.1989449504 -62 15 10.724308128       16.05 14.82 ~ 1 0
44 2MASS J15075290-6215077 * 15 07 52.904 -62 15 07.72   19.2   17.2 18.33 ~ 1 0
45 GSC2.3 S7QP035813 * 15 07 55.506 -62 22 33.31       19.65 17.11 ~ 1 0
46 2MASS J15075554-6222336 NIR 15 07 55.5296104224 -62 22 33.590344548         17.65 ~ 1 0
47 CXOU J150756.0-622238 X 15 07 56.018 -62 22 38.70           ~ 3 0
48 2MASS J15075683-6222411 * 15 07 56.8353908256 -62 22 41.205618300         16.55 ~ 1 0
49 GSC2.3 S7QP035739 * 15 07 56.844 -62 22 41.03   19.97   17.07 16.38 ~ 2 0
50 1RXS J150841.2-621006 X 15 08 41.2 -62 10 06           ~ 2 1
51 CXOU J150850.6-621018 Rad 15 08 50.19 -62 10 25.5           ~ 4 1
52 AJG 44 Psr 16 17 33.000 -51 02 00.00           ~ 552 3
53 HESS J1702-420 gam 17 02 44.0 -42 00 57           ~ 46 0
54 PSR J1702-4128 Psr 17 02 52.52 -41 28 48.2           ~ 72 0
55 HESS J1708-410 gam 17 08 24.0 -41 05 24           ~ 21 0
56 HESS J1718-385 gam 17 18 07 -38 33.0           ~ 32 0
57 PSR B1823-13 Psr 18 26 13.06 -13 34 48.1           ~ 460 1

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