2004ApJ...610..156L

Query : 2004ApJ...610..156L

2004ApJ...610..156L - Astrophys. J., 610, 156-160 (2004/July-3)

Observation of M87 at 400 GeV with the Whipple 10 meter telescope.

LE BOHEC S., BADRAN H.M., BOND I.H., BOYLE P.J., BRADBURY S.M., BUCKLEY J.H., CARTER-LEWIS D.A., CATANESE M., CELIK O., CUI W., DANIEL M., D'VALI M., DE LA CALLE PEREZ I., DUKE C., FALCONE A., FEGAN D.J., FEGAN S.J., FINLEY J.P., FORTSON L.F., GAIDOS J.A., GAMMELL S., GIBBS K., GILLANDERS G.H., GRUBE J., HALL J., HALL T.A., HANNA D., HILLAS A.M., HOLDER J., HORAN D., JARVIS A., JORDAN M., KENNY G.E., KERTZMAN M., KIEDA D., KILDEA J., KNAPP J., KOSACK K., KRAWCZYNSKI H., KRENNRICH F., LANG M.J., LINTON E., LLOYD-EVANS J., MILOVANOVIC A., MORIARTY P., MULLER D., NAGAI T., NOLAN S., ONG R.A., PALLASSINI R., PETRY D., POWER-MOONEY B., QUINN J., QUINN M., RAGAN K., REBILLOT P., REYNOLDS P.T., ROSE H.J., SCHROEDTER M., SEMBROSKI G.H., SWORDY S.P., SYSON A., VASSILIEV V.V., WAKELY S.P., WALKER G., WEEKES T.C. and ZWEERINK J.

Abstract (from CDS):

We present results from observations taken with the Whipple 10 m very high energy γ-ray telescope with maximal sensitivity at 400 GeV during 39 hr between 2000 and 2003 in the direction of the giant radio galaxy M87. Using the entire data set, we derive a 99% confidence level upper limit on the flux of γ-ray emission above 400 GeV from M87 to be ≤6.9x10–12/cm2/s. This suggests variability at the 90% confidence level when compared to the flux measured by the HEGRA collaboration in 1999 if the differential spectrum is steeper than a power law of index 3.75. Our search for a correlation between the Rossi X-Ray Timing Explorer all-sky monitor observation and a potential γ-ray signal is inconclusive.

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Journal keyword(s): Galaxies: Active - Galaxies: Individual: Messier Number: M87 - Gamma Rays: Observations

Simbad objects: 10

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Number of rows : 10
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 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
3 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
4 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
5 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
6 RX J1428.5+4240 BLL 14 28 32.6090008440 +42 40 21.048123396   16.95 16.45 14.4   ~ 549 1
7 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
8 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 699 2
9 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
10 QSO B2344+514 BLL 23 47 04.8372110928 +51 42 17.877513168     15.50 10.7   ~ 500 1

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