TY - JOUR
T1 - A study of high energy emission from the TeV blazar Mrk 501 during multiwavelength observations in 1996
AU - Kataoka, J.
AU - Mattox, J. R.
AU - Quinn, J.
AU - Kubo, H.
AU - Makino, F.
AU - Takahashi, T.
AU - Inoue, S.
AU - Hartman, R. C.
AU - Madejski, G. M.
AU - Sreekumar, P.
AU - Wagner, S. J.
PY - 2000
Y1 - 2000
N2 - We present the results of a multiwavelength campaign for Mrk 501 performed in March 1996 with ASCA, EGRET , Whipple, and optical telescopes. We report here for the first time the detection of GeV γ-ray flux from Mrk 501 with EGRET with 3.5 σ significance (E > 100 MeV). Higher flux was also observed in April/May 1996, with 4.0 σ for E > 100 MeV, and 5.2 σ for E > 500 MeV. We find that the multiband spectrum in March 1996 is consistent with that calculated from a one-zone SSC model, except for the extremely 'flat' TeV spectrum. We show that this flat spectrum cannot be explained by either 2nd order Comptonization or the contribution of the 'seed' IR photons from the host galaxy.
AB - We present the results of a multiwavelength campaign for Mrk 501 performed in March 1996 with ASCA, EGRET , Whipple, and optical telescopes. We report here for the first time the detection of GeV γ-ray flux from Mrk 501 with EGRET with 3.5 σ significance (E > 100 MeV). Higher flux was also observed in April/May 1996, with 4.0 σ for E > 100 MeV, and 5.2 σ for E > 500 MeV. We find that the multiband spectrum in March 1996 is consistent with that calculated from a one-zone SSC model, except for the extremely 'flat' TeV spectrum. We show that this flat spectrum cannot be explained by either 2nd order Comptonization or the contribution of the 'seed' IR photons from the host galaxy.
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U2 - 10.1016/S0273-1177(99)00832-7
DO - 10.1016/S0273-1177(99)00832-7
M3 - Article
AN - SCOPUS:6744222847
SN - 0273-1177
VL - 25
SP - 737
EP - 740
JO - Advances in Space Research
JF - Advances in Space Research
IS - 3-4
ER -