2018ApJ...863..175G

Query : 2018ApJ...863..175G

2018ApJ...863..175G - Astrophys. J., 863, 175-175 (2018/August-3)

Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours.

GOYAL A., STAWARZ L., ZOLA S., MARCHENKO V., SOIDA M., NILSSON K., CIPRINI S., BARAN A., OSTROWSKI M., WIITA P.J., GOPAL-KRISHNA, SIEMIGINOWSKA A., SOBOLEWSKA M., JORSTAD S., MARSCHER A., ALLER M.F., ALLER H.D., HOVATTA T., CATON D.B., REICHART D., MATSUMOTO K., SADAKANE K., GAZEAS K., KIDGER M., PIIROLA V., JERMAK H., ALICAVUS F., BALIYAN K.S., BARANSKY A., BERDYUGIN A., BLAY P., BOUMIS P., BOYD D., BUFAN Y., CAMPAS TORRENT M., CAMPOS F., CARRILLO GOMEZ J., DALESSIO J., DEBSKI B., DIMITROV D., DROZDZ M., ER H., ERDEM A., ESCARTIN PEREZ A., FALLAH RAMAZANI V., FILIPPENKO A.V., GAFTON E., GARCIA F., GODUNOVA V., GOMEZ PINILLA F., GOPINATHAN M., HAISLIP J.B., HAQUE S., HARMANEN J., HUDEC R., HURST G., IVARSEN K.M., JOSHI A., KAGITANI M., KARAMAN N., KARJALAINEN R., KAUR N., KOZIEL-WIERZBOWSKA D., KULIGOWSKA E., KUNDERA T., KUROWSKI S., KVAMMEN A., LACLUYZE A.P., LEE B.C., LIAKOS A., LOZANO DE HARO J., MOORE J.P., MUGRAUER M., NAVES NOGUES R., NEELY A.W., OGLOZA W., OKANO S., PAJDOSZ U., PANDEY J.C., PERRI M., POYNER G., PROVENCAL J., PURSIMO T., RAJ A., RAJKUMAR B., REINTHAL R., REYNOLDS T., SAARIO J., SADEGI S., SAKANOI T., SALTO GONZALEZ J.L., SAMEER, SIMON A.O., SIWAK M., SCHWEYER T., SOLDAN ALFARO F.C., SONBAS E., STROBL J., TAKALO L.O., TREMOSA ESPASA L., VALDES J.R., VASYLENKO V.V., VERRECCHIA F., WEBB J.R., YONEDA M., ZEJMO M., ZHENG W., ZIELINSKI P., JANIK J., CHAVUSHYAN V., MOHAMMED I., CHEUNG C.C. and GIROLETTI M.

Abstract (from CDS):

We present the results of our power spectral density analysis for the BL Lac object OJ 287, utilizing the Fermi-LAT survey at high-energy γ-rays, Swift-XRT in X-rays, several ground-based telescopes and the Kepler satellite in the optical, and radio telescopes at GHz frequencies. The light curves are modeled in terms of continuous-time autoregressive moving average (CARMA) processes. Owing to the inclusion of the Kepler data, we were able to construct for the first time the optical variability power spectrum of a blazar without any gaps across ∼6 dex in temporal frequencies. Our analysis reveals that the radio power spectra are of a colored-noise type on timescales ranging from tens of years down to months, with no evidence for breaks or other spectral features. The overall optical power spectrum is also consistent with a colored noise on the variability timescales ranging from 117 years down to hours, with no hints of any quasi-periodic oscillations. The X-ray power spectrum resembles the radio and optical power spectra on the analogous timescales ranging from tens of years down to months. Finally, the γ-ray power spectrum is noticeably different from the radio, optical, and X-ray power spectra of the source: we have detected a characteristic relaxation timescale in the Fermi-LAT data, corresponding to ∼150 days, such that on timescales longer than this, the power spectrum is consistent with uncorrelated (white) noise, while on shorter variability timescales there is correlated (colored) noise.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): acceleration of particles - BL Lacertae objects: individual: OJ 287 - galaxies: active - magnetic fields - radiation mechanisms: non-thermal

Simbad objects: 5

goto Full paper

goto View the references in ADS

Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 887 1
2 QSO J0738+1742 BLL 07 38 07.39375312 +17 42 18.9981506   16.76 16.22 15.78   ~ 994 1
3 QSO J0854+2006 BLL 08 54 48.8749846272 +20 06 30.639583620   15.91 15.43 15.56   ~ 2343 1
4 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2682 1
5 QSO B2155-304 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1739 1

To bookmark this query, right click on this link: simbad:objects in 2018ApJ...863..175G and select 'bookmark this link' or equivalent in the popup menu