A Decade of Multiwavelength Observations of the TeV Blazar 1ES 1215+303: Extreme Shift of the Synchrotron Peak Frequency and Long-term Optical–Gamma-Ray Flux Increase

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

18 Lataukset (Pure)

Abstrakti

Blazars are known for their variability on a wide range of timescales at all wavelengths. Most studies of TeV gamma-ray blazars focus on short timescales, especially during flares. With a decade of observations from the Fermi-LAT and VERITAS, we present an extensive study of the long-term multiwavelength radio-to-gamma-ray flux-density variability, with the addition of a couple of short-time radio-structure and optical polarization observations of the blazar 1ES 1215+303 (z = 0.130), with a focus on its gamma-ray emission from 100 MeV to 30 TeV. Multiple strong GeV gamma-ray flares, a long-term increase in the gamma-ray and optical flux baseline, and a linear correlation between these two bands are observed over the ten-year period. Typical HBL behaviors are identified in the radio morphology and broadband spectrum of the source. Three stationary features in the innermost jet are resolved by Very Long Baseline Array at 43.1, 22.2, and 15.3 GHz. We employ a two-component synchrotron self-Compton model to describe different flux states of the source, including the epoch during which an extreme shift in energy of the synchrotron peak frequency from infrared to soft X-rays is observed.
AlkuperäiskieliEnglanti
Sivumäärä25
JulkaisuAstrophysical Journal
Vuosikerta891
Numero2
DOI - pysyväislinkit
TilaJulkaistu - 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki Sukella tutkimusaiheisiin 'A Decade of Multiwavelength Observations of the TeV Blazar 1ES 1215+303: Extreme Shift of the Synchrotron Peak Frequency and Long-term Optical–Gamma-Ray Flux Increase'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

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    • 3 Päättynyt

    Mustien aukkojen suihkut ja niiden fysiikka

    Chamani Velasco, W. & Savolainen, T.

    01/09/201724/09/2019

    Projekti: Academy of Finland: Other research funding

    Mustien aukkojen suihkut ja niiden fysiikka

    Savolainen, T. & Chamani Velasco, W.

    01/01/201631/08/2017

    Projekti: Academy of Finland: Other research funding

    Mustien aukkojen suihkut ja niiden fysiikka

    Savolainen, T.

    01/01/201624/09/2019

    Projekti: Academy of Finland: Other research funding

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