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2005ApJ...634..947S - Astrophys. J., 634, 947-954 (2005/December-1)
A very high energy gamma-ray spectrum of 1ES 2344+514.
SCHROEDTER M., BADRAN H.M., BUCKLEY J.H., BUSSONS GORDO J., CARTER-LEWIS D.A., DUKE C., FEGAN D.J., FEGAN S.F., FINLEY J.P., GILLANDERS G.H., GRUBE J., HORAN D., KENNY G.E., KERTZMAN M., KOSACK K., KRENNRICH F., KIEDA D.B., KILDEA J., LANG M.J., LEE K., MORIARTY P., QUINN J., QUINN M., POWER-MOONEY B., SEMBROSKI G.H., WAKELY S.P., VASSILIEV V.V., WEEKES T.C. and ZWEERINK J.
Abstract (from CDS):
(d3N)/(dEdAdt)=(5.1±1.0st±1.2sy)x10–7(E/TeV)–2.54±0.17st±0.07sy_^/TeV/m2/s.
If we compare the spectral index with that of the other five confirmed TeV blazars, the spectrum of 1ES 2344 is similar to that of 1ES 1959+650, which is located at almost the same distance. The spectrum of 1ES 2344 is steeper than the brightest flare spectra of Markarian 421 (Mrk 421) and Markarian 501 (Mrk 501), both of which are located at a distance about two-thirds that of 1ES 2344, and harder than the spectra of PKS 2155-304 and H1426+428, which are located almost 3 times as far away. This trend is consistent with attenuation caused by the infrared extragalactic background radiation.
Abstract Copyright: ∼
Journal keyword(s): Galaxies: BL Lacertae Objects: Individual: Alphanumeric: 1ES 2344+514 - Gamma Rays: Observations
Simbad objects: 7
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