Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'488'730
Articles rated: 2609

29 March 2024
 
  » arxiv » 2001.7729

 Article overview


Study of the variable broadband emission of Markarian 501 during the most extreme Swift X-ray activity
MAGIC Collaboration ; V. A. Acciari ; S. Ansoldi ; L. A. Antonelli ; A. Babić ; B. Banerjee ; U. Barres de Almeida ; J. A. Barrio ; J. Becerra González ; W. Bednarek ; E. Bernardini ; A. Berti ; J. Besenrieder ; W. Bhattacharyya ; C. Bigongiari ; O. Blanch ; G. Bonnoli ; G. Busetto ; R. Carosi ; G. Ceribella ; S. Cikota ; S. M. Colak ; P. Colin ; E. Colombo ; J. L. Contreras ; J. Cortina ; S. Covino ; V. D'Elia ; P. Da Vela ; F. Dazzi ; A. De Angelis ; B. De Lotto ; M. Delfino ; J. Delgado ; F. Di Pierro ; E. Do Souto Espi nera ; A. Domínguez ; D. Dominis Prester ; M. Doro ; V. Fallah Ramazani ; A. Fattorini ; A. Fernández-Barral ; G. Ferrara ; D. Fidalgo ; L. Foffano ; M. V. Fonseca ; L. Font ; C. Fruck ; D. Galindo ; S. Gallozzi ; R. J. García López ; M. Garczarczyk ; S. Gasparyan ; M. Gaug ; P. Giammaria ; N. Godinović ; D. Guberman ; D. Hadasch ; A. Hahn ; T. Hassan ; J. Herrera ; J. Hoang ; D. Hrupec ; S. Inoue ; K. Ishio ; Y. Iwamura ; H. Kubo ; J. Kushida ; D. Kuveždić ; A. Lamastra ; D. Lelas ; F. Leone ; E. Lindfors ; S. Lombardi ; F. Longo ; M. López ; A. López-Oramas ; B. Machado de Oliveira Fraga ; C. Maggio ; P. Majumdar ; M. Makariev ; M. Mallamaci ; G. Maneva ; M. Manganaro ; L. Maraschi ; M. Mariotti ; M. Martínez ; S. Masuda ; D. Mazin ; M. Minev ; J. M. Miranda ; R. Mirzoyan ; E. Molina ; A. Moralejo ; V. Moreno ; E. Moretti ; P. Munar-Adrove r ; V. Neustroev ; A. Niedzwiecki ; M. Nievas Rosillo ; C. Nigro ; K. Nilsson ; D. Ninci ; K. Nishijima ; K. Noda ; L. Nogués ; S. Paiano ; J. Palacio ; D. Paneque ; R. Paoletti ; J. M. Paredes ; G. Pedaletti ; P. Peñil ; M. Peresano ; M. Persic ; P. G. Prada Moroni ; E. Prandini ; I. Puljak ; J. R. Garcia ; M. Ribó ; J. Rico ; C. Righi ; A. Rugliancich ; L. Saha ; N. Sahakyan ; T. Saito ; K. Satalecka ; T. Schweizer ; J. Sitarek ; I. Šnidarić ; D. Sobczynska ; A. Somero ; A. Stamerra ; M. Strzys ; T. Surić ; F. Tavecchio ; P. Temnikov ; T. Terzić ; M. Teshima ; N. Torres-Albá ; S. Tsujimoto ; J. van Scherpenberg ; G. Vanzo ; M. Vazquez Acosta ; I. Vovk ; M. Will ; D. Zarić ; FACT Collaboration ; A. Arbet-Engels ; D. Baack ; M. Balbo ; A. Biland ; M. Blank ; T. Bretz ; K. Bruegge ; M. Bulinski ; J. Buss ; M. Doerr ; D. Dorner ; S. Einecke ; D. Elsaesser ; D. Hildebrand ; L. Linhoff ; K. Mannheim ; S. Mueller ; D. Neise ; A. Neronov ; M. Noethe ; A. Paravac ; W. Rhode ; B. Schleicher ; F. Schulz ; K. Sedlaczek ; A. Shukla ; V. Sliusar ; E. von Willert ; R. Walter ; C. Wendel ; A. Tramacere ; A. Lien ; M. Perri ; F. Verrecchia ; M. Armas Padilla ; C. Leto ; A. Lähteenmäki ; M. Tornikoski ; J. Tammi ;
Date 21 Jan 2020
AbstractMrk501 is a very high-energy (VHE) gamma-ray blazar located at z=0.034. During a period of two weeks in July 2014, the highest X-ray activity of Mrk501 was observed in ~14 years of operation of the Neil Gehrels Swift Gamma-ray Burst Observatory. We characterize the broadband variability of Mrk501 from radio to VHE gamma rays, and evaluate whether it can be interpreted within theoretical scenarios widely used to explain the broadband emission from blazars. The temporal evolution of the most prominent and variable segments of the SED is described with a one-zone synchrotron self-Compton model with variations in the break energy of the electron energy distribution (EED), and with some adjustments in the magnetic field strength and spectral shape of the EED. A narrow feature at ~3 TeV was observed in the VHE spectrum measured on 2014 July 19 (MJD 56857.98), which is the day with the highest X-ray flux ($>0.3$ keV) measured during the entire Swift mission. This feature is inconsistent with the classical analytic functions to describe the measured VHE spectra (power law, log-parabola, and log-parabola with exponential cutoff) at more than 3$sigma$. A fit with a log-parabola plus a narrow component is preferred over the fit with a single log-parabola at more than 4$sigma$, and a dedicated Monte Carlo simulation estimated the significance of this extra component to be larger than 3$sigma$. Under the assumption that this VHE spectral feature is real, we show that it can be reproduced with three distinct theoretical scenarios: a) a pileup in the EED due to stochastic acceleration; b) a structured jet with two-SSC emitting regions, with one region dominated by an extremely narrow EED; and c) an emission from an IC pair cascade.
Source arXiv, 2001.7729
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica