2020ApJ...891..170V

Query : 2020ApJ...891..170V

2020ApJ...891..170V - Astrophys. J., 891, 170-170 (2020/March-2)

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.

VALVERDE J., HORAN D., BERNARD D., FEGAN S. (The Fermi-LAT Collaboration), ABEYSEKARA A.U., ARCHER A., BENBOW W., BIRD R., BRILL A., BROSE R., BUCHOVECKY M., BUCKLEY J.H., CHRISTIANSEN J.L., CUI W., FALCONE A., FENG Q., FINLEY J.P., FORTSON L., FURNISS A., GENT A., GILLANDERS G.H., GIURI C., GUETA O., HANNA D., HASSAN T., HERVET O., HOLDER J., HUGHES G., HUMENSKY T.B., KAARET P., KELLEY-HOSKINS N., KERTZMAN M., KIEDA D., KRAUSE M., KRENNRICH F., LANG M.J., MAIER G., MORIARTY P., MUKHERJEE R., NIETO D., NIEVAS-ROSILLO M., O'BRIEN S., ONG R.A., OTTE A.N., PARK N., PETRASHYK A., PFRANG K., PICHEL A., POHL M., PRADO R.R., PUESCHEL E., QUINN J., RAGAN K., REYNOLDS P.T., RIBEIRO D., RICHARDS G.T., ROACHE E., SADEH I., SANTANDER M., SCOTT S.S., SEMBROSKI G.H., SHAHINYAN K., SHANG R., SUSHCH I., VASSILIEV V.V., WEINSTEIN A., WELLS R.M., WILCOX P., WILHELM A., WILLIAMS D.A., WILLIAMSON T.J. (The VERITAS Collaboration), NOTO G., EDWARDS P.G., PINER B.G., FALLAH RAMAZANI V., HOVATTA T., JORMANAINEN J., LINDFORS E., NILSSON K., TAKALO L., KOVALEV Y.Y., LISTER M.L., PUSHKAREV A.B., SAVOLAINEN T., KIEHLMANN S., MAX-MOERBECK W., READHEAD A.C.S., LAHTEENMAKI A. and TORNIKOSKI M.

Abstract (from CDS):

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.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Active galaxies - Jets - Gamma-rays - Blazars - BL Lacertae objects

VizieR on-line data: <Available at CDS (J/ApJ/891/170): veritas.dat lat.dat xrt_pc.dat xrt_wt.dat uvot.dat tuorla.dat not.dat ovro.dat met.dat>

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 UGC 773 BLL 01 13 43.14494773 +02 22 17.3162687   16.4 16.0 11.22   ~ 145 1
2 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
3 RX J0521.7+2112 BLL 05 21 45.9657388992 +21 12 51.452786736           ~ 162 1
4 RX J1015.0+4926 BLL 10 15 04.1396533776 +49 26 00.706055496   16.56 16.15 14.58   ~ 400 3
5 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
6 Ton 605 HB* 12 16 53.6748432768 +30 04 08.692883544   16.110 15.98     B 223 0
7 RX J1217.8+3007 BLL 12 17 52.0819904040 +30 07 00.634936872   16.07 15.62 13.47   G7 516 1
8 PG 1218+304 BLL 12 21 21.9426947832 +30 10 37.158534012   16.50 15.85 15.7   ~ 497 1
9 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
10 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1

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