2016MNRAS.461..202A

Query : 2016MNRAS.461..202A

2016MNRAS.461..202A - Mon. Not. R. Astron. Soc., 461, 202-208 (2016/September-1)

Discovery of very high energy gamma rays from 1ES 1440+122.

ARCHAMBAULT S., ARCHER A., BARNACKA A., BEHERA B., BEILICKE M., BENBOW W., BERGER K., BIRD R., BOTTCHER M., BUCKLEY J.H., BUGAEV V., CARDENZANA J.V., CERRUTI M., CHEN X., CHRISTIANSEN J.L., CIUPIK L., COLLINS-HUGHES E., CONNOLLY M.P., CUI W., DICKINSON H.J., DUMM J., EISCH J.D., ERRANDO M., FALCONE A., FEDERICI S., FENG Q., FINLEY J.P., FLEISCHHACK H., FORTSON L., FURNISS A., GILLANDERS G.H., GODAMBE S., GRIFFIN S., GRIFFITHS S.T., GRUBE J., GYUK G., HAKANSSON N., HANNA D., HOLDER J., HUGHES G., JOHNSON C.A., KAARET P., KAR P., KERTZMAN M., KHASSEN Y., KIEDA D., KRAWCZYNSKI H., KUMAR S., LANG M.J., MADHAVAN A.S., MAIER G., McARTHUR S., McCANN A., MEAGHER K., MILLIS J., MORIARTY P., NELSON T., NIETO D., O'FAOLAIN DE BHROITHE A., ONG R.A., OTTE A.N., PARK N., PERKINS J.S., POHL M., POPKOW A., PROKOPH H., PUESCHEL E., QUINN J., RAGAN K., RAJOTTE J., REYES L.C., REYNOLDS P.T., RICHARDS G.T., ROACHE E., SEMBROSKI G.H., SHAHINYAN K., SMITH A.W., STASZAK D., SWEENEY K., TELEZHINSKY I., TUCCI J.V., TYLER J., VARLOTTA A., VASSILIEV V.V., WAKELY S.P., WELSING R., WILHELM A., WILLIAMS D.A. and ZITZER B.

Abstract (from CDS):

The BL Lacertae object 1ES 1440+122 was observed in the energy range from 85 GeV to 30 TeV by the VERITAS array of imaging atmospheric Cherenkov telescopes. The observations, taken between 2008 May and 2010 June and totalling 53 h, resulted in the discovery of γ-ray emission from the blazar, which has a redshift z=0.163. 1ES 1440+122 is detected at a statistical significance of 5.5 standard deviations above the background with an integral flux of (2.8±0.7stat±0.8sys) x 10^-12 cm^-2 s^-1 (1.2 per cent of the Crab Nebula's flux) above 200 GeV. The measured spectrum is described well by a power law from 0.2 to 1.3 TeV with a photon index of 3.1±0.4stat±0.2sys. Quasi-simultaneous multiwavelength data from the Fermi Large Area Telescope (0.3-300 GeV) and the Swift X-ray Telescope (0.2-10 keV) are additionally used to model the properties of the emission region. A synchrotron self-Compton model produces a good representation of the multiwavelength data. Adding an external-Compton or a hadronic component also adequately describes the data.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): BL Lacertae objects: general - gamma-rays: general - gamma-rays: general

Simbad objects: 5

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Number of rows : 5
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 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
2 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
3 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
4 RX J1442.8+1200 BLL 14 42 48.2771008152 +12 00 40.348597716   18.34 17.63 15.2   ~ 189 1
5 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1

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