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
Kieda D; Ong RA; Noto G; Kelley-Hoskins N; Shang R; Nieto D; Hovatta T; Williams DA; Archer A; Kovalev YY; Weinstein A; Sushch I; Wilcox P; Sadeh I; Takalo L; Gillanders GH; Krennrich F; Park N; Ramazani VF; Christiansen JL; Gent A; Shahinyan K; Quinn J; Brose R; Ragan K; Buckley JH; Giuri C; Pushkarev AB; Bernard D; Hughes G; O'Brien S; Lister ML; Williamson TJ; Lang MJ; Buchovecky M; Furniss A; Ribeiro D; Mukherjee R; Falcone A; Hassan T; Readhead ACS; Moriarty P; Pohl M; Fortson L; Lahteenmaki A; Nievas-Rosillo M; Horan D; Hanna D; Edwards PG; Jormanainen J; Maier G; Max-Moerbeck W; Piner BG; Pichel A; Sembroski GH; Abeysekara AU; Valverde J; Nilsson K; Vassiliev VV; Finley JP; Savolainen T; Richards GT; Petrashyk A; Brill A; Tornikoski M; Fegan S; Santander M; Cui W; Lindfors E; Pueschel E; Kertzman M; Holder J; Feng Q; Roache E; Gueta O; Scott SS; Otte AN; Pfrang K; Hervet O; Prado RR; Kaaret P; Wells RM; Wilhelm A; Humensky TB; Benbow W; Reynolds PT; Kiehlmann S; Krause M; Bird R
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
Kieda D
Ong RA
Noto G
Kelley-Hoskins N
Shang R
Nieto D
Hovatta T
Williams DA
Archer A
Kovalev YY
Weinstein A
Sushch I
Wilcox P
Sadeh I
Takalo L
Gillanders GH
Krennrich F
Park N
Ramazani VF
Christiansen JL
Gent A
Shahinyan K
Quinn J
Brose R
Ragan K
Buckley JH
Giuri C
Pushkarev AB
Bernard D
Hughes G
O'Brien S
Lister ML
Williamson TJ
Lang MJ
Buchovecky M
Furniss A
Ribeiro D
Mukherjee R
Falcone A
Hassan T
Readhead ACS
Moriarty P
Pohl M
Fortson L
Lahteenmaki A
Nievas-Rosillo M
Horan D
Hanna D
Edwards PG
Jormanainen J
Maier G
Max-Moerbeck W
Piner BG
Pichel A
Sembroski GH
Abeysekara AU
Valverde J
Nilsson K
Vassiliev VV
Finley JP
Savolainen T
Richards GT
Petrashyk A
Brill A
Tornikoski M
Fegan S
Santander M
Cui W
Lindfors E
Pueschel E
Kertzman M
Holder J
Feng Q
Roache E
Gueta O
Scott SS
Otte AN
Pfrang K
Hervet O
Prado RR
Kaaret P
Wells RM
Wilhelm A
Humensky TB
Benbow W
Reynolds PT
Kiehlmann S
Krause M
Bird R
IOP PUBLISHING LTD
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042826665
https://urn.fi/URN:NBN:fi-fe2021042826665
Tiivistelmä
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.
Kokoelmat
- Rinnakkaistallenteet [19206]