Title
Temporal analysis of an unprecedented data set for the ?-ray blazar 1ES 1215+303: Fermi- LAT and VERITAS light curves spanning ten years
Date Issued
01 January 2017
Access level
metadata only access
Resource Type
conference paper
Author(s)
Abstract
We present here the results of the analysis of the ?-ray blazar, 1ES 1215+303, over a 10-year period, from 2008 to 2017, measured at high energies (HE; 200 MeV < E < 100 GeV) by the Fermi Large Area Telescope (LAT) and at very high energies (VHE; E > 100 GeV) by Fermi- LAT and VERITAS. This is the longest temporal study of this high-frequency-peaked BL Lac object (HBL) at ?-ray energies to date. The spectrum follows a log parabola over this time period, and its HE and VHE spectra are well-connected. Its flux is sufficiently strong at HE to allow us to bin the Fermi- LAT data in 3-day intervals, enabling us to investigate the temporal evolution of the flux in unprecedented detail. Several flaring episodes were detected and evidence for an overall trend of increasing flux over the span of the 10 years was observed. These light curves, in addition to the spectra, are presented. This unique data set will help us to advance our understanding of the underlying physical processes in blazar jets.
Volume
2017-October
Language
English
OCDE Knowledge area
Astronomía
Subjects
Scopus EID
2-s2.0-85041028534
Source
Proceedings of Science
Resource of which it is part
Proceedings of Science
Conference
7th International Fermi Symposium, IFS 2017Garmisch-Partenkirchen
Sponsor(s)
Funding text 1
See https://veritas.sao.arizona.edu for the VERITAS acknowledgements. The Fermi-LAT Collaboration acknowledges support for LAT development, operation and data analysis from NASA and DOE (United States), CEA/Irfu and IN2P3/CNRS (France), ASI and INFN (Italy), MEXT, KEK, and JAXA (Japan), and the K.A. Wallenberg Foundation, the Swedish Research Council and the National Space Board (Sweden). Science analysis support in the operations phase from INAF (Italy) and CNES (France) is also gratefully acknowledged. This work performed in part under DOE Contract DE-AC02-76SF00515.
Funding text 2
The Fermi- LAT Collaboration acknowledges support for LAT development, operation and data analysis from NASA and DOE (United States), CEA/Irfu and IN2P3/CNRS (France), ASI and INFN (Italy), MEXT, KEK, and JAXA (Japan), and the K.A. Wallenberg Foundation, the Swedish Research Council and the National Space Board (Sweden). Science analysis support in the operations phase from INAF (Italy) and CNES (France) is also gratefully acknowledged. This work performed in part under DOE Contract DE- AC02-76SF00515.
Sources of information:
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Scopus