Simultaneous Multi-Wavelength Observations of the TeV Blazar Mrk 421 during February − March, 2003: X-Ray and NIR Correlated Variability ∗
Simultaneous Multi-Wavelength Observations of the TeV Blazar Mrk 421 during February − March, 2003: X-Ray and NIR Correlated Variability ∗
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DOI：
10.1088/1009-9271/8/4/03
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发表时间：
2008-01
期刊：
影响因子：
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通讯作者：
Alok C. Gupta;B. Acharya;D. Bose;V. Chitnis;Jun-Hui Fan Center for Astrophysics;G. University;Guangzhou;C. T. I. O. F. Research;Homi Bhabha Road;Colaba;Mumbai;India.
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文献类型：
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作者：
Alok C. Gupta;B. Acharya;D. Bose;V. Chitnis;Jun-Hui Fan Center for Astrophysics;G. University;Guangzhou;C. T. I. O. F. Research;Homi Bhabha Road;Colaba;Mumbai;India.
我们报告了2003年2月至3月期间对TeV blazar MRK 421进行的多波长同步观测的结果。我们使用印度帕奇马希的塔塔基础研究所的帕奇马希切伦科夫望远镜阵列(PACT)观测到了MRK 421。其他同步数据取自文献和公共数据档案。我们分析了NASA Rossi X射线计时探测器(RXTE)的高质量X射线(2-20keV)观测结果。我们得到了X射线和J波段(1.25μ)近红外(NIR)波长之间可能存在的相关变异性。这是首例在MRK 421或任何高能峰值(HBL)blazar中出现的X射线和近红外相关变率。这里报告的相关变率表明，近红外和X射线辐射的来源相似。排放受MRK 421中央发动机周围介质环境的影响不大。这些观测结果与喷流激波模型相一致。
We report the result of simultaneous multi-wavelength observations of the TeV blazar Mrk 421 during February–March 2003. We observed Mrk 421 using the Pachmarhi Array of Cerenkov Telescopes (PACT) of Tata Institute of Fundamental Research at Pachmarhi, India. Other simultaneous data were taken from the literature and public data archives. We have analyzed the high quality X-ray (2–20 keV) observations from the NASA Rossi X-Ray Timing Explorer (RXTE). We obtained a possible correlated variability between X-ray and J band (1.25 μ) near infrared (NIR) wavelength. This is the first case of X-ray and NIR correlated variability in Mrk 421 or any high energy peaked (HBL) blazar. The correlated variability reported here indicates a similar origin for the NIR and X-ray emissions. The emission is not affected much by the environment of the surrounding medium of the central engine of Mrk 421. The observations are consistent with the shock-in-jet model for the emissions.