Near infrared intraday variability of Mrk 421
نویسندگان
چکیده
منابع مشابه
Near Infrared Intraday Variability of Mrk 421
We report results from our monitoring of the BL Lac object Mrk 421 in the near-IR J band. The observations, aimed at studying the intraday variability (IDV) of the object, were carried out systematically over an extended (and near-continuous) period of eight nights from the 1.2m Mount Abu Infrared Telescope, India. There are limited studies for Mrk 421 in the J band for such an extended period....
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In this work, I present the results of a thorough nonlinear time series analysis study concerning the long-term variability behaviour of Mrk 421. I use all the archival data obtained by the proportional counter array (PCA) and the all-sky monitor (ASM) aboard the Rossi X-ray timing explorer (RXTE), since 1996. Linearity and stationarity tests reveal that the long-term timing properties of the s...
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Daily monitoring of Mrk 421 in the X-ray and TeV bands during the first half of 2004 showed rapid flaring events above an elevated base flux level, culminating from March to May 2004 at an average flux level matching the highest detected flux state in 2001. Here we summarise the daily X-ray spectral variability observed with the RXTE-PCA instrument. We also explore the X-ray and TeV gamma-ray c...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2004
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20040306