A study of high energy emission from the TeV blazar Mrk 501 during multiwavelength observations in 1996

Jun Kataoka, J. R. Mattox, J. Quinn, H. Kubo, F. Makino, T. Takahashi, S. Inoue, R. C. Hartman, G. M. Madejski, P. Sreekumar, S. J. Wagner

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)737-740
Number of pages4
JournalAdvances in Space Research
Volume25
Issue number3-4
Publication statusPublished - 2000
Externally publishedYes

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Optical telescopes
Fluxes
Galaxies
energy
Seed
Photons
seeds
rays
telescopes
galaxies
seed
photons
detection

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Kataoka, J., Mattox, J. R., Quinn, J., Kubo, H., Makino, F., Takahashi, T., ... Wagner, S. J. (2000). A study of high energy emission from the TeV blazar Mrk 501 during multiwavelength observations in 1996. Advances in Space Research, 25(3-4), 737-740.

A study of high energy emission from the TeV blazar Mrk 501 during multiwavelength observations in 1996. / Kataoka, Jun; Mattox, J. R.; Quinn, J.; Kubo, H.; Makino, F.; Takahashi, T.; Inoue, S.; Hartman, R. C.; Madejski, G. M.; Sreekumar, P.; Wagner, S. J.

In: Advances in Space Research, Vol. 25, No. 3-4, 2000, p. 737-740.

Research output: Contribution to journalArticle

Kataoka, J, Mattox, JR, Quinn, J, Kubo, H, Makino, F, Takahashi, T, Inoue, S, Hartman, RC, Madejski, GM, Sreekumar, P & Wagner, SJ 2000, 'A study of high energy emission from the TeV blazar Mrk 501 during multiwavelength observations in 1996', Advances in Space Research, vol. 25, no. 3-4, pp. 737-740.
Kataoka, Jun ; Mattox, J. R. ; Quinn, J. ; Kubo, H. ; Makino, F. ; Takahashi, T. ; Inoue, S. ; Hartman, R. C. ; Madejski, G. M. ; Sreekumar, P. ; Wagner, S. J. / A study of high energy emission from the TeV blazar Mrk 501 during multiwavelength observations in 1996. In: Advances in Space Research. 2000 ; Vol. 25, No. 3-4. pp. 737-740.
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AU - Quinn, J.

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AU - Takahashi, T.

AU - Inoue, S.

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AU - Wagner, S. J.

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