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Modelling the Steady State Spectral Energy Distribution of the Bl-lac Object Pks 2155-30.4 Using a Selfconsistent Ssc Model : Volume 6, Issue 1 (13/01/2010)

By Weidinger, M.

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Book Id: WPLBN0003992430
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File Size: Pages 7
Reproduction Date: 2015

Title: Modelling the Steady State Spectral Energy Distribution of the Bl-lac Object Pks 2155-30.4 Using a Selfconsistent Ssc Model : Volume 6, Issue 1 (13/01/2010)  
Author: Weidinger, M.
Volume: Vol. 6, Issue 1
Language: English
Subject: Science, Astrophysics, Space
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Rüger, M., Spanier, F., & Weidinger, M. (2010). Modelling the Steady State Spectral Energy Distribution of the Bl-lac Object Pks 2155-30.4 Using a Selfconsistent Ssc Model : Volume 6, Issue 1 (13/01/2010). Retrieved from http://www.ebooklibrary.org/


Description
Description: Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. In this paper we present a fully selfconsistent SSC model with particle acceleration due to shock and stochastic acceleration (Fermi-I and Fermi-II-Processes respectively) to model the quiescent spectral energy distribution (SED) observed from PKS 2155. The simultaneous August/September 2008 multiwavelength data of H.E.S.S., Fermi, RXTE/SWIFT and ATOM give new constraints to the high-energy peak in the SED concerning its curvature. We find that, in our model, a monoenergetic injection of electrons at Γ0=910 into the model region, which are accelerated by Fermi-I- and Fermi-II-processes while suffering synchrotron and inverse Compton losses, finally leads to the observed SED of PKS 2155-30.4 shown in H.E.S.S. and Fermi-LAT collaborations (2009). In contrast to other SSC models our parameters arise from the jet's microphysics and the spectrum is evolving selfconsistently from diffusion and acceleration. The Γ0-factor can be interpreted as two counterstreaming plasmas due to the motion of the blob at a bulk factor of Γ=58 and opposed moving upstream electrons at moderate Lorentz factors with an average of Γu≈8.

Summary
Modelling the steady state spectral energy distribution of the BL-Lac Object PKS 2155-30.4 using a selfconsistent SSC model

Excerpt
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