منابع مشابه
Optical Variability of the TeV Blazar Mrk 501 in the Low - State
We report results based on the monitoring of the BL Lac object Mrk 501 in the optical (B, V and R) passbands from March to May 2000. Observations spread over 12 nights were carried out using 1.2 meter Mount Abu Telescope, India and 61 cm Telescope at Sobaeksan Astronomy Observatory, South Korea. The aim is to study the intra-day variability (IDV), short term variability and color variability in...
متن کاملDiscovery of off-axis jet structure of TeV blazar Mrk 501 with mm-VLBI
Context. High-resolution millimeter wave very-long-baseline interferometry (mm-VLBI) is an ideal tool for probing the structure at the base of extragalactic jets in detail. The TeV blazar Mrk 501 is one of the best targets among BL Lac objects for studying the nature of off-axis jet structures because it shows different jet position angles at different scales. Aims. The aim of this study is to ...
متن کاملLong - Term X - Ray and Tev Variability of Mrk 501
We present X-ray observations of the nearby TeV blazar Mrk 501 obtained with RXTE during 1997, 1998, 1999, 2000, and 2004. The goal of this study is twofold: 1) characterize the long-term X-ray flux and spectral variability of the source with a model-independent analysis, and 2) investigate the X-ray and TeV correlation on long timescales (> days). Significant spectral variations were observed ...
متن کاملA Study of High Energy Emission from the TeV blazar Mrk 501 during Multiwavelength Observations in 1996
We present the results of a multiwavelength campaign for Mrk 501 performed in March 1996 with ASCA, EGRET , Whipple, and optical telescopes. The X–ray flux observed with ASCA was 5 times higher than the quiescent level and gradually decreased by a factor of 2 during the observation in March 1996. In the X–ray band, a spectral break was observed around 2 keV. We report here for the first time th...
متن کاملIntrinsic Spectra of the TeV Blazars Mrk 421 and Mrk 501
Energy spectra of γ-ray blazars may contain an imprint from the cosmic infrared background radiation due to γ-ray absorption (pair-production) by soft photons constituting the extragalactic background light (EBL). The signature of this imprint depends on the spectral shape of the EBL. In this work we correct the observed spectra of Mrk 421 and Mrk 501 for absorption using different possible rea...
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ژورنال
عنوان ژورنال: Galaxies
سال: 2020
ISSN: 2075-4434
DOI: 10.3390/galaxies8030055