Multiband variability studies and novel broadband SED modeling of Mrk 501 in 2009
Abstract
We present an extensive study of the BL Lac object Mrk 501 based on a data set collected during the multi-instrument campaign spanning from 2009 March 15 to 2009 August 1 which includes, among other instruments, MAGIC, VERITAS, Whipple 10-m, Fermi-LAT, RXTE, Swift, GASP-WEBT and VLBA. We find an increase in the fractional variability with energy, while no significant interband correlations of flux changes are found in the acquired data set. The higher variability in the very high energy (>100 GeV, VHE) gamma-ray emission and the lack of correlation with the X-ray emission indicate that the highest-energy electrons that are responsible for the VHE gamma-rays do not make a dominant contribution to the ~1 keV emission. Alternatively, there could be a very variable component contributing to the VHE gamma-ray emission in addition to that coming from the synchrotron self-Compton (SSC) scenarios. The space of SSC model parameters is probed following a dedicated grid-scan strategy, allowing for a wide range of models to be tested and offering a study of the degeneracy of model-to-data agreement in the individual model parameters. We find that there is some degeneracy in both the one-zone and the two-zone SSC scenarios that were probed, with several combinations of model parameters yielding a similar model-to-data agreement, and some parameters better constrained than others. The SSC model grid-scan shows that the flaring activity around 2009 May 22 cannot be modeled adequately with a one-zone SSC scenario, while it can be suitably described within a two-independent-zone SSC scenario. The observation of an electric vector polarization angle rotation coincident with the gamma-ray flare from 2009 May 1 resembles those reported previously for low frequency peaked blazars, hence suggesting that there are many similarities in the flaring mechanisms of blazars with different jet properties.
Keywords
Cite
@article{arxiv.1612.09472,
title = {Multiband variability studies and novel broadband SED modeling of Mrk 501 in 2009},
author = {M. L. Ahnen and S. Ansoldi and L. A. Antonelli and P. Antoranz and A. Babic and B. Banerjee and P. Bangale and U. Barres de Almeida and J. A. Barrio and J. Becerra González and W. Bednarek and E. Bernardini and A. Berti and B. Biasuzzi and A. Biland and O. Blanch and S. Bonnefoy and G. Bonnoli and F. Borracci and T. Bretz and S. Buson and A. Carosi and A. Chatterjee and R. Clavero and P. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and P. Da Vela and F. Dazzi and A. De Angelis and B. De Lotto and E. de Ona Wilhelmi and F. Di Pierro and M. Doert and A. Domínguez and D. Dominis Prester and D. Dorner and M. Doro and S. Einecke and D. Eisenacher Glawion and D. Elsaesser and M. Engelkemeier and V. Fallah Ramazani and A. Fernández-Barral and D. Fidalgo and M. V. Fonseca and L. Font and K. Frantzen and C. Fruck and D. Galindo and R. J. García López and M. Garczarczyk and D. Garrido Terrats and M. Gaug and P. Giammaria and N. Godinović and A. González Munoz and D. Gora and D. Guberman and D. Hadasch and A. Hahn and Y. Hanabata and M. Hayashida and J. Herrera and J. Hose and D. Hrupec and G. Hughes and W. Idec and K. Kodani and Y. Konno and H. Kubo and J. Kushida and A. La Barbera and D. Lelas and E. Lindfors and S. Lombardi and F. Longo and M. López and R. López-Coto and P. Majumdar and M. Makariev and K. Mallot and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and B. Marcote and M. Mariotti and M. Martínez and D. Mazin and U. Menzel and J. M. Miranda and R. Mirzoyan and A. Moralejo and E. Moretti and D. Nakajima and V. Neustroev and A. Niedzwiecki and M. Nievas Rosillo and K. Nilsson and K. Nishijima and K. Noda and L. Nogués and A. Overkemping and S. Paiano and J. Palacio and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and X. Paredes-Fortuny and G. Pedaletti and M. Peresano and L. Perri and M. Persic and J. Poutanen and P. G. Prada Moroni and E. Prandini and I. Puljak and I. Reichardt and W. Rhode and M. Ribó and J. Rico and J. Rodriguez Garcia and T. Saito and K. Satalecka and S. Schröder and C. Schultz and T. Schweizer and S. N. Shore and A. Sillanpää and J. Sitarek and I. Snidaric and D. Sobczynska and A. Stamerra and T. Steinbring and M. Strzys and T. Surić and L. Takalo and F. Tavecchio and P. Temnikov and T. Terzić and D. Tescaro and M. Teshima and J. Thaele and D. F. Torres and T. Toyama and A. Treves and G. Vanzo and V. Verguilov and I. Vovk and J. E. Ward and M. Will and M. H. Wu and R. Zanin and A. U. Abeysekara and S. Archambault and A. Archer and W. Benbow and R. Bird and M. Buchovecky and J. H. Buckley and V. Bugaev and M. P. Connolly and W. Cui and H. J. Dickinson and A. Falcone and Q. Feng and J. P. Finley and H. Fleischhack and A. Flinders and L. Fortson and G. H. Gillanders and S. Griffin and J. Grube and M. Hütten and D. Hanna and J. Holder and T. B. Humensky and P. Kaaret and P. Kar and N. Kelley-Hoskins and M. Kertzman and D. Kieda and M. Krause and F. Krennrich and M. J. Lang and G. Maier and A. McCann and P. Moriarty and R. Mukherjee and D. Nieto and S. O'Brien and R. A. Ong and N. Otte and N. Park and J. Perkins and A. Pichel and M. Pohl and A. Popkow and E. Pueschel and J. Quinn and K. Ragan and P. T. Reynolds and G. T. Richards and E. Roache and A. C. Rovero and C. Rulten and I. Sadeh and M. Santander and G. H. Sembroski and K. Shahinyan and I. Telezhinsky and J. V. Tucci and J. Tyler and S. P. Wakely and A. Weinstein and P. Wilcox and A. Wilhelm and D. A. Williams and B. Zitzer and S. Razzaque and M. Villata and C. M. Raiteri and H. D. Aller and M. F. Aller and V. M. Larionov and A. A. Arkharov and D. A. Blinov and N. V. Efimova and T. S. Grishina and V. A. Hagen-Thorn and E. N. Kopatskaya and L. V. Larionova and E. G. Larionova and D. A. Morozova and I. S. Troitsky and R. Ligustri and P. Calcidese and A. Berdyugin and O. M. Kurtanidze and M. G. Nikolashvili and G. N. Kimeridze and L. A. Sigua and S. O. Kurtanidze and R. A. Chigladze and W. P. Chen and E. Koptelova and T. Sakamoto and A. C. Sadun and J. W. Moody and C. Pace and R. Pearson and Y. Yatsu and Y. Mori and A. Carraminyana and L. Carrasco and E. de la Fuente and J. P. Norris and P. S. Smith and A. Wehrle and M. A. Gurwell and Alma Zook and C. Pagani and M. Perri and M. Capalbi and A. Cesarini and H. A. Krimm and Y. Y. Kovalev and Yu. A. Kovalev and E. Ros and A. B. Pushkarev and M. L. Lister and K. V. Sokolovsky and M. Kadler and G. Piner and A. Lähteenmäki and M. Tornikoski and E. Angelakis and T. P. Krichbaum and I. Nestoras and L Fuhrmann and J. A. Zensus and P. Cassaro and A. Orlati and G. Maccaferri and P. Leto and M. Giroletti and J. L. Richards and W. Max-Moerbeck and A. C. S. Readhead},
journal= {arXiv preprint arXiv:1612.09472},
year = {2017}
}
Comments
33 pages, 15 figures, accepted for publication in A&A. Corresponding authors: Marlene Doert ([email protected]) and David Paneque ([email protected])