Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501

The BL Lac objects Mrk 421 and Mrk 501 are objects of a large multi-year multiinstrument campaign including VLBA, F-GAMMA, GASP-WEBT, Swift, RXTE, Fermi-LAT, MAGIC and VERITAS, among other instruments and collaborations. This extensive radio to TeV gamma-ray dataset provides an unprecedented tempora...

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Guardado en:
Detalles Bibliográficos
Publicado: 2012
Materias:
BL Lacertae objects: general
BL Lacertae objects: individual (Mrk 421
Gamma rays: general
Mrk 501)
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1505_n_p518_Nowak
http://hdl.handle.net/20.500.12110/paper_0094243X_v1505_n_p518_Nowak
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0094243X_v1505_n_p518_Nowak
record_format dspace
spelling paper:paper_0094243X_v1505_n_p518_Nowak2023-06-08T15:09:13Z Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501 BL Lacertae objects: general BL Lacertae objects: individual (Mrk 421 Gamma rays: general Mrk 501) The BL Lac objects Mrk 421 and Mrk 501 are objects of a large multi-year multiinstrument campaign including VLBA, F-GAMMA, GASP-WEBT, Swift, RXTE, Fermi-LAT, MAGIC and VERITAS, among other instruments and collaborations. This extensive radio to TeV gamma-ray dataset provides an unprecedented temporal and energy coverage, which allows for detailed studies of the evolution of their broad-band spectral energy distribution that cannot be achieved on any other BL Lac object. We report on the temporal variability and spectral correlations from the 4.5 months-long campaigns of 2009. We show that Mrk 421 and Mrk 501 have differences in their broad band variability, suggesting different mechanisms for the production of the high-energy emission. In addition, we also report on two events of high activity in very high energies (VHE) of Mrk 501 during May 2009, one of which was not accompanied by enhanced optical/X-ray activity but showed a clear correlation with an increase in the polarized optical flux and a rotation of the polarization vector. This is the first time that such type of flaring activity is observed in a high-synchrotron-peaked BL Lac object. © 2012 American Institute of Physics. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1505_n_p518_Nowak http://hdl.handle.net/20.500.12110/paper_0094243X_v1505_n_p518_Nowak
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic BL Lacertae objects: general
BL Lacertae objects: individual (Mrk 421
Gamma rays: general
Mrk 501)
spellingShingle BL Lacertae objects: general
BL Lacertae objects: individual (Mrk 421
Gamma rays: general
Mrk 501)
Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501
topic_facet BL Lacertae objects: general
BL Lacertae objects: individual (Mrk 421
Gamma rays: general
Mrk 501)
description The BL Lac objects Mrk 421 and Mrk 501 are objects of a large multi-year multiinstrument campaign including VLBA, F-GAMMA, GASP-WEBT, Swift, RXTE, Fermi-LAT, MAGIC and VERITAS, among other instruments and collaborations. This extensive radio to TeV gamma-ray dataset provides an unprecedented temporal and energy coverage, which allows for detailed studies of the evolution of their broad-band spectral energy distribution that cannot be achieved on any other BL Lac object. We report on the temporal variability and spectral correlations from the 4.5 months-long campaigns of 2009. We show that Mrk 421 and Mrk 501 have differences in their broad band variability, suggesting different mechanisms for the production of the high-energy emission. In addition, we also report on two events of high activity in very high energies (VHE) of Mrk 501 during May 2009, one of which was not accompanied by enhanced optical/X-ray activity but showed a clear correlation with an increase in the polarized optical flux and a rotation of the polarization vector. This is the first time that such type of flaring activity is observed in a high-synchrotron-peaked BL Lac object. © 2012 American Institute of Physics.
title Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501
title_short Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501
title_full Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501
title_fullStr Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501
title_full_unstemmed Multi-instrument variability study of the classical TeV objects Mrk 421 and Mrk 501
title_sort multi-instrument variability study of the classical tev objects mrk 421 and mrk 501
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0094243X_v1505_n_p518_Nowak
http://hdl.handle.net/20.500.12110/paper_0094243X_v1505_n_p518_Nowak
_version_ 1768545503492964352

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