scholarly journals Spectral energy distributions and high-energy emission of BL Lac type objects

2008 ◽  
Vol 388 (1) ◽  
pp. L79-L83 ◽  
Author(s):  
Sergey Troitsky
Keyword(s):  
High Energy ◽  
Spectral Energy ◽  
Spectral Energy Distributions ◽  
Energy Distributions ◽  
Energy Emission ◽  
Bl Lac ◽  
High Energy Emission

THE OPTICAL-X-RAY–GAMMA-RAY SPECTRAL ENERGY DISTRIBUTIONS OF GEV GAMMA-RAY LOUD BLAZARS AND CONNECTION AMONG LBLs, HBLs AND FSRQs

2003 ◽  
Vol 12 (05) ◽  
pp. 781-789 ◽  
Author(s):  
G. Z. XIE ◽  
S. X. DING ◽  
H. DAI ◽  
E. W. LIANG ◽  
H. T. LIU
Keyword(s):  
Gamma Ray ◽  
High Energy ◽  
Spectral Energy ◽  
Spectral Indices ◽  
Spectral Energy Distributions ◽  
Energy Distributions ◽  
X Ray ◽  
Γ Ray ◽  
High Energy Emission ◽  
Bl Lacs

In this paper, we introduce a new composite spectral indices αγxγ = αxγ - αγ, and prove [Formula: see text], that means αγxγ is intrinsic. We plot a αxox - αγxγ diagram for 25 Gev γ-ray blazars for which αx and αγ have been provided in the literature, where αxox = αox - αx which was introduced by Sambruna et al. (1996) and proved that it is intrinsic by our previous paper (Xie et al. 2001). Using this new composite color–color (αxox - αγxγ) diagram, we investigated the nature of the HBLs–LBLs relationship, and the BL Lacs–FSRQs relationship, in high-energy emission. The results show that the spectral energy distributions of three subclasses of Gev γ-ray loud blazars are different, but essentially continuous: HBLs and FSRQs occupy separated regions while LBLs bridge the gap between HBLs and FSRQs. The results are consistent with that derived from a low energy color–color(αxox - αoro) diagram by Sambruna et al. (1996) and Xie et al. (2001). However, on the αox - αxγ diagram, FSRQs, LBLs and HBLs occupy same region. Because both αγxγ and αxox are intrinsic, thus, the new connection among HBLs, LBLs and FSRQs obtained by us is intrinsic.

MODELING OF NON-HBL VHE γ-RAY BLAZARS

2009 ◽  
Vol 18 (10) ◽  
pp. 1517-1521
Author(s):  
MARKUS BÖTTCHER
Keyword(s):  
High Energy ◽  
Spectral Energy ◽  
Energy Distributions ◽  
Bl Lac Objects ◽  
Spectrum Radio ◽  
Bl Lac ◽  
Γ Ray ◽  
High Energy Emission ◽  
Radio Quasar ◽  
Negligible Contribution

This is a summary of recent modeling results of three newly detected TeV blazars of the intermediate BL Lac object (IBL) and flat-spectrum radio quasar (FSRQ) sub-classes: W Comae, 3C 66A, and 3C 279. For model fits to the spectral energy distributions of W Comae and 3C 66A, a non-negligible contribution from a source of soft radiation external to the jets of these blazars is strongly preferred over pure synchrotron-self-Compton or synchrotron-proton-blazar models, respectively. This indicates that IBLs are truly intermediate between the "classical" TeV blazars (high-frequency-peaked BL Lac objects) and FSRQs. The VHE γ-ray detection of the FSRQ 3C 279 poses severe challenges for leptonic models, and seems to favor a hadronic origin of the high-energy emission. However, even a hadronic model suffers from problems with extreme energy requirements.

scholarly journals Modelling of the spectral energy distribution of Fornax A: leptonic and hadronic production of high-energy emission from the radio lobes

2014 ◽  
Vol 446 (4) ◽  
pp. 3478-3491 ◽  
Author(s):  
B. McKinley ◽  
R. Yang ◽  
M. López-Caniego ◽  
F. Briggs ◽  
N. Hurley-Walker ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Spectral Energy Distribution ◽  
High Energy ◽  
Spectral Energy ◽  
Energy Emission ◽  
Hadronic Production ◽  
High Energy Emission

scholarly journals Is very high energy emission from the BL Lac 1ES 0806+524 centrifugally driven?

New Astronomy ◽  
2010 ◽  
Vol 15 (4) ◽  
pp. 351-355 ◽  
Author(s):  
Z. Osmanov
Keyword(s):  
High Energy ◽  
Energy Emission ◽  
Bl Lac ◽  
Very High Energy ◽  
High Energy Emission ◽  
Very High

scholarly journals POWERFUL HIGH-ENERGY EMISSION OF THE REMARKABLE BL Lac OBJECT S5 0716+714

2009 ◽  
Vol 706 (2) ◽  
pp. 1433-1437 ◽  
Author(s):  
V. Vittorini ◽  
M. Tavani ◽  
A. Paggi ◽  
A. Cavaliere ◽  
A. Bulgarelli ◽  
...  
Keyword(s):  
High Energy ◽  
Energy Emission ◽  
Bl Lac ◽  
High Energy Emission

scholarly journals Spectral energy distributions of FR I nuclei and the FR I/BL Lac unifying model

2000 ◽  
Vol 318 (2) ◽  
pp. 493-500 ◽  
Author(s):  
A. Capetti ◽  
E. Trussoni ◽  
A. Celotti ◽  
L. Feretti ◽  
M. Chiaberge
Keyword(s):  
Spectral Energy ◽  
Spectral Energy Distributions ◽  
Energy Distributions ◽  
Bl Lac

scholarly journals A model for high-energy emission of the Intrabinary shock in pulsar binaries

2018 ◽  
Vol 168 ◽  
pp. 04013
Author(s):  
Hongjun An
Keyword(s):  
Neutron Star ◽  
Inclination Angle ◽  
Binary Systems ◽  
Gamma Ray ◽  
Spectral Energy Distribution ◽  
High Energy ◽  
Spectral Energy ◽  
Plasma Properties ◽  
Energy Emission ◽  
High Energy Emission

We present our studies of intrabinary shock emission for astrophysical binary systems with a neutron star. We construct a model for the shock emission and compare the model calculation with the light curve and the spectral energy distribution of the gamma-ray binary 1FGL J1018.6-5856. The model assumes a slow and a fast population of particles accelerated in the shock, and computes the high-energy emission spectra and orbital light curves produced by synchrotron, self-Compton and external Compton processes of the high-energy particles in the shock. The model allows one to study plasma properties and to constrain the binary geometry, most importantly the inclination angle (i). We discuss potential use of this model for other pulsar binaries to determine the inclination angle of the binary hence the mass of the neutron star.

scholarly journals Spectral energy distributions of the BL Lac PKS 2155 - 304 from XMM-Newton

2014 ◽  
Vol 444 (4) ◽  
pp. 3647-3656 ◽  
Author(s):  
J. Bhagwan ◽  
A. C. Gupta ◽  
I. E. Papadakis ◽  
P. J. Wiita
Keyword(s):  
Spectral Energy ◽  
Spectral Energy Distributions ◽  
Energy Distributions ◽  
Bl Lac

High‐Energy Emission from the TeV Blazar Markarian 501 during Multiwavelength Observations in 1996

1999 ◽  
Vol 514 (1) ◽  
pp. 138-147 ◽  
Author(s):  
J. Kataoka ◽  
J. R. Mattox ◽  
J. Quinn ◽  
H. Kubo ◽  
F. Makino ◽  
...  
Keyword(s):  
High Energy ◽  
Energy Emission ◽  
High Energy Emission ◽  
Multiwavelength Observations
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