Showing 1 - 20 results of 520 for search '"blazar"', query time: 0.24s Refine Results
  1. 1

    Variability of Blazars and Blazar Models over 38 Years by Alan P. Marscher

    Published 2016-09-01
    “…Since 1978, when BL Lac objects and violently variable quasars were married to become “blazars”, physical interpretations of the phenomenon have evolved. …”
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    Synchrotron and inverse-Compton emission from blazar jets - IV.BL Lac type blazars and the physical basis for the blazar sequence by Potter, W, Cotter, G

    Published 2013
    “…We find that the BL Lacs have lower jet powers and bulk Lorentz factors than the sample of Compton-dominant blazars investigated in Paper III, consistent with the blazar sequence. …”
    Journal article
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    Astrophysical Neutrinos and Blazars by Paolo Giommi, Paolo Padovani

    Published 2021-12-01
    “…We review and discuss recent results on the search for correlations between astrophysical neutrinos and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>γ</mi></semantics></math></inline-formula>-ray-detected sources, with many extragalactic studies reporting potential associations with different types of blazars. We investigate possible dependencies on blazar sub-classes by using the largest catalogues and all the multi-frequency data available. …”
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  4. 4

    Hadronic Modeling of Blazars by Weidinger Matthias, Spanier Felix

    Published 2013-12-01
    “…The ongoing systematic search for sources of extragalactic gamma rays has now revealed many blazars in which the very high energy output can not consistently be described as synchrotron self-Compton radiation. …”
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    Article
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    Synchrotron and inverse-Compton emission from blazar jets - III. Compton-dominant blazars by Potter, W, Cotter, G

    Published 2013
    “…We find that all these blazars require high power (&gt;1039W), high bulk Lorentz factor (&gt;20) jets observed close to the line of sight (&lt;2{ring operator}) as we expect from the blazar sequence and consistent with the results from Paper II. …”
    Journal article
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    High energy emission in blazars by Celotti, A

    Published 2002
    “…Different scenarios which have been proposed for the production of high energy radiation in blazars will be briefly summarized. Recent results on the energy spectral distribution of high redshift radio-loud quasars are then considered in the context of the blazar phenomenology and their consequences for our understanding of jets are discussed. …”
    Conference item
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    SEDs and Beaming Effect for Fermi Blazars by Jun-Hui Fan, Jiang-He Yang, Yi Liu, Yu-Hai Yuan, Cao Lin, Hu-Bing Xiao

    Published 2016-06-01
    “…In this work, based on our previous calculations of spectral energy distributions for a sample of Fermi blazars (Fan et al. 2015a), we calculated the radio loudness and performed correlation analyses. …”
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  14. 14

    Modeling the Time-Dependent Polarization of Blazars by Alan P. Marscher, Svetlana G. Jorstad, Karen E. Williamson

    Published 2017-10-01
    “…Linear polarization is an extremely valuable observational tool for probing the dynamic physical conditions of blazar jets. Some patterns are seen in the data, suggestive of order that can be explained by shock waves and helical magnetic field components. …”
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    Jets, black holes and disks in blazars by Ghisellini Gabriele

    Published 2013-12-01
    “…The Fermi and Swift satellites, together with ground based Cherenkov telescopes, has greatly improved our knowledge of blazars, namely Flat Spectrum Radio Quasars and BL Lac objects, since all but the most powerful emit most of their electro–magnetic output at γ–ray energies, while the very powerful blazars emit mostly in the hard X–ray region of the spectrum. …”
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  17. 17

    Consequences of Proton Acceleration in Blazar Jets by Apostolos Mastichiadis

    Published 2016-11-01
    “…Hadronic models of blazar emission constitute an interesting alternative to the more popular leptonic ones. …”
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    Article
  18. 18

    Magnetic Field Amplification and Blazar Flares by Chen Xuhui, Chatterjee Ritaban, Fossati Giovanni, Pohl Martin

    Published 2013-12-01
    “…Using our time dependent multizone blazar emission code, we evaluate several scenarios that may represent such phenomena. …”
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    The “Blazar Sequence” in the TeV Band by Zhihao Ouyang, Hubing Xiao, Jianzhen Chen, Junhui Fan, Anton A. Strigachev, Rumen S. Bachev, Xiangtao Zeng, Marina Manganaro, Rui Xue, Zelin Li

    Published 2023-01-01
    “…In this work, for the first time we expand this topic to the TeV band by using a sample of 58 TeV blazars, including 48 blazars in the quiescent state and 21 blazars in the flaring state (11 blazars show in both quiescent and flaring state). …”
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