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

J. 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

doi:10.1016/S0273-1177(99)00832-7

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

J. 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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	737-740
Number of pages	4
Journal	Advances in Space Research
Volume	25
Issue number	3-4
DOIs	https://doi.org/10.1016/S0273-1177(99)00832-7
Publication status	Published - 2000 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
Earth and Planetary Sciences(all)

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10.1016/S0273-1177(99)00832-7

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

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.",

author = "J. Kataoka and Mattox, {J. R.} and J. Quinn and H. Kubo and F. Makino and T. Takahashi and S. Inoue and Hartman, {R. C.} and Madejski, {G. M.} and P. Sreekumar and Wagner, {S. J.}",

year = "2000",

month = jan,

day = "1",

doi = "10.1016/S0273-1177(99)00832-7",

language = "English",

volume = "25",

pages = "737--740",

journal = "Life sciences and space research",

issn = "0273-1177",

publisher = "Elsevier Limited",

number = "3-4",

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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 - 2000/1/1

Y1 - 2000/1/1

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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DO - 10.1016/S0273-1177(99)00832-7

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VL - 25

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EP - 740

JO - Life sciences and space research

JF - Life sciences and space research

IS - 3-4

ER -

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

Abstract

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