Multiwavelength behaviour of the blazar OJ 248 from radio to γ -rays

M. I. Carnerero; C. M. Raiteri; M. Villata; J. A. Acosta-Pulido; F. D'Ammando; P. S. Smith; V. M. Larionov; I. Agudo; M. J. Arévalo; A. A. Arkharov; U. Bach; R. Bachev; E. Benítez; D. A. Blinov; V. Bozhilov; C. S. Buemi; A. Bueno Bueno; D. Carosati; C. Casadio; W. P. Chen; G. Damljanovic; A. Di Paola; N. V. Efimova; Sh A. Ehgamberdiev; M. Giroletti; J. L. Gómez; P. A. González-Morales; A. B. Grinon-Marin; T. S. Grishina; M. A. Gurwell; D. Hiriart; H. Y. Hsiao; S. Ibryamov; S. G. Jorstad; M. Joshi; E. N. Kopatskaya; O. M. Kurtanidze; S. O. Kurtanidze; A. Lähteenmäki; E. G. Larionova; L. V. Larionova; C. Lázaro; P. Leto; C. S. Lin; H. C. Lin; A. I. Manilla-Robles; A. P. Marscher; I. M. McHardy; Y. Metodieva; D. O. Mirzaqulov; A. A. Mokrushina; S. N. Molina; D. A. Morozova; M. G. Nikolashvili; M. Orienti; E. Ovcharov; N. Panwar; A. Pastor Yabar; I. Puerto Giménez; V. Ramakrishnan; G. M. Richter; M. Rossini; L. A. Sigua; A. Strigachev; B. Taylor; M. Tornikoski; C. Trigilio; Yu V. Troitskaya; I. S. Troitsky; G. Umana; A. Valcheva; S. Velasco; O. Vince; A. E. Wehrle; H. Wiesemeyer

doi:10.1093/mnras/stv823

Multiwavelength behaviour of the blazar OJ 248 from radio to γ -rays

M. I. Carnerero, C. M. Raiteri, M. Villata, J. A. Acosta-Pulido, F. D'Ammando, P. S. Smith, V. M. Larionov, I. Agudo, M. J. Arévalo, A. A. Arkharov, U. Bach, R. Bachev, E. Benítez, D. A. Blinov, V. Bozhilov, C. S. Buemi, A. Bueno Bueno, D. Carosati, C. Casadio, W. P. ChenG. Damljanovic, A. Di Paola, N. V. Efimova, Sh A. Ehgamberdiev, M. Giroletti, J. L. Gómez, P. A. González-Morales, A. B. Grinon-Marin, T. S. Grishina, M. A. Gurwell, D. Hiriart, H. Y. Hsiao, S. Ibryamov, S. G. Jorstad, M. Joshi, E. N. Kopatskaya, O. M. Kurtanidze, S. O. Kurtanidze, A. Lähteenmäki, E. G. Larionova, L. V. Larionova, C. Lázaro, P. Leto, C. S. Lin, H. C. Lin, A. I. Manilla-Robles, A. P. Marscher, I. M. McHardy, Y. Metodieva, D. O. Mirzaqulov, A. A. Mokrushina, S. N. Molina, D. A. Morozova, M. G. Nikolashvili, M. Orienti, E. Ovcharov, N. Panwar, A. Pastor Yabar, I. Puerto Giménez, V. Ramakrishnan, G. M. Richter, M. Rossini, L. A. Sigua, A. Strigachev, B. Taylor, M. Tornikoski, C. Trigilio, Yu V. Troitskaya, I. S. Troitsky, G. Umana, A. Valcheva, S. Velasco, O. Vince, A. E. Wehrle, H. Wiesemeyer

Steward Observatory

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32 Scopus citations

Abstract

We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near-infrared, and radio) obtained by 21 observatories participating in the Gamma-Ray Large Area Space Telescope (GLAST)-AGILE Support Program of the Whole Earth Blazar Telescope, as well as data from the Swift (optical-UV and X-rays) and Fermi (γ -rays) satellites, to study flux and spectral variability and correlations among emissions in different bands. We take into account the effect of absorption by the Damped Lyman α intervening system at z = 0.525. Two major outbursts were observed in 2006-2007 and in 2012-2013 at optical and near-IR wavelengths, while in the high-frequency radio light curves prominent radio outbursts are visible peaking at the end of 2010 and beginning of 2013, revealing a complex radio-optical correlation. Crosscorrelation analysis suggests a delay of the optical variations after the γ -ray ones of about a month, which is a peculiar behaviour in blazars. We also analyse optical polarimetric and spectroscopic data. The average polarization percentage P is less than 3 per cent, but it reaches~19 per cent during the early stage of the 2012-2013 outburst.Avague correlation of P with brightness is observed. There is no preferred electric vector polarization angle and during the outburst the linear polarization vector shows wide rotations in both directions, suggesting a complex behaviour/structure of the jet and possible turbulence. The analysis of 140 optical spectra acquired at the Steward Observatory reveals a strong Mg II broad emission line with an essentially stable flux of 6.2 × 10^-15 erg cm^-2 s^-1 and a full width at half-maximum of 2053 km s^-1.

Original language	English (US)
Pages (from-to)	2677-2691
Number of pages	15
Journal	Monthly Notices of the Royal Astronomical Society
Volume	450
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stv823
State	Published - Jul 1 2015

Keywords

Galaxies: active
Galaxies: jets
Quasars: general
Quasars: individual: OJ 248

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/mnras/stv823

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Carnerero, M. I., Raiteri, C. M., Villata, M., Acosta-Pulido, J. A., D'Ammando, F., Smith, P. S., Larionov, V. M., Agudo, I., Arévalo, M. J., Arkharov, A. A., Bach, U., Bachev, R., Benítez, E., Blinov, D. A., Bozhilov, V., Buemi, C. S., Bueno Bueno, A., Carosati, D., Casadio, C., ... Wiesemeyer, H. (2015). Multiwavelength behaviour of the blazar OJ 248 from radio to γ -rays. Monthly Notices of the Royal Astronomical Society, 450(3), 2677-2691. https://doi.org/10.1093/mnras/stv823

Carnerero, MI, Raiteri, CM, Villata, M, Acosta-Pulido, JA, D'Ammando, F, Smith, PS, Larionov, VM, Agudo, I, Arévalo, MJ, Arkharov, AA, Bach, U, Bachev, R, Benítez, E, Blinov, DA, Bozhilov, V, Buemi, CS, Bueno Bueno, A, Carosati, D, Casadio, C, Chen, WP, Damljanovic, G, Di Paola, A, Efimova, NV, Ehgamberdiev, SA, Giroletti, M, Gómez, JL, González-Morales, PA, Grinon-Marin, AB, Grishina, TS, Gurwell, MA, Hiriart, D, Hsiao, HY, Ibryamov, S, Jorstad, SG, Joshi, M, Kopatskaya, EN, Kurtanidze, OM, Kurtanidze, SO, Lähteenmäki, A, Larionova, EG, Larionova, LV, Lázaro, C, Leto, P, Lin, CS, Lin, HC, Manilla-Robles, AI, Marscher, AP, McHardy, IM, Metodieva, Y, Mirzaqulov, DO, Mokrushina, AA, Molina, SN, Morozova, DA, Nikolashvili, MG, Orienti, M, Ovcharov, E, Panwar, N, Pastor Yabar, A, Puerto Giménez, I, Ramakrishnan, V, Richter, GM, Rossini, M, Sigua, LA, Strigachev, A, Taylor, B, Tornikoski, M, Trigilio, C, Troitskaya, YV, Troitsky, IS, Umana, G, Valcheva, A, Velasco, S, Vince, O, Wehrle, AE & Wiesemeyer, H 2015, 'Multiwavelength behaviour of the blazar OJ 248 from radio to γ -rays', Monthly Notices of the Royal Astronomical Society, vol. 450, no. 3, pp. 2677-2691. https://doi.org/10.1093/mnras/stv823

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title = "Multiwavelength behaviour of the blazar OJ 248 from radio to γ -rays",

abstract = "We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near-infrared, and radio) obtained by 21 observatories participating in the Gamma-Ray Large Area Space Telescope (GLAST)-AGILE Support Program of the Whole Earth Blazar Telescope, as well as data from the Swift (optical-UV and X-rays) and Fermi (γ -rays) satellites, to study flux and spectral variability and correlations among emissions in different bands. We take into account the effect of absorption by the Damped Lyman α intervening system at z = 0.525. Two major outbursts were observed in 2006-2007 and in 2012-2013 at optical and near-IR wavelengths, while in the high-frequency radio light curves prominent radio outbursts are visible peaking at the end of 2010 and beginning of 2013, revealing a complex radio-optical correlation. Crosscorrelation analysis suggests a delay of the optical variations after the γ -ray ones of about a month, which is a peculiar behaviour in blazars. We also analyse optical polarimetric and spectroscopic data. The average polarization percentage P is less than 3 per cent, but it reaches~19 per cent during the early stage of the 2012-2013 outburst.Avague correlation of P with brightness is observed. There is no preferred electric vector polarization angle and during the outburst the linear polarization vector shows wide rotations in both directions, suggesting a complex behaviour/structure of the jet and possible turbulence. The analysis of 140 optical spectra acquired at the Steward Observatory reveals a strong Mg II broad emission line with an essentially stable flux of 6.2 × 10-15 erg cm-2 s-1 and a full width at half-maximum of 2053 km s-1.",

keywords = "Galaxies: active, Galaxies: jets, Quasars: general, Quasars: individual: OJ 248",

author = "Carnerero, {M. I.} and Raiteri, {C. M.} and M. Villata and Acosta-Pulido, {J. A.} and F. D'Ammando and Smith, {P. S.} and Larionov, {V. M.} and I. Agudo and Ar{\'e}valo, {M. J.} and Arkharov, {A. A.} and U. Bach and R. Bachev and E. Ben{\'i}tez and Blinov, {D. A.} and V. Bozhilov and Buemi, {C. S.} and {Bueno Bueno}, A. and D. Carosati and C. Casadio and Chen, {W. P.} and G. Damljanovic and {Di Paola}, A. and Efimova, {N. V.} and Ehgamberdiev, {Sh A.} and M. Giroletti and G{\'o}mez, {J. L.} and Gonz{\'a}lez-Morales, {P. A.} and Grinon-Marin, {A. B.} and Grishina, {T. S.} and Gurwell, {M. A.} and D. Hiriart and Hsiao, {H. Y.} and S. Ibryamov and Jorstad, {S. G.} and M. Joshi and Kopatskaya, {E. N.} and Kurtanidze, {O. M.} and Kurtanidze, {S. O.} and A. L{\"a}hteenm{\"a}ki and Larionova, {E. G.} and Larionova, {L. V.} and C. L{\'a}zaro and P. Leto and Lin, {C. S.} and Lin, {H. C.} and Manilla-Robles, {A. I.} and Marscher, {A. P.} and McHardy, {I. M.} and Y. Metodieva and Mirzaqulov, {D. O.} and Mokrushina, {A. A.} and Molina, {S. N.} and Morozova, {D. A.} and Nikolashvili, {M. G.} and M. Orienti and E. Ovcharov and N. Panwar and {Pastor Yabar}, A. and {Puerto Gim{\'e}nez}, I. and V. Ramakrishnan and Richter, {G. M.} and M. Rossini and Sigua, {L. A.} and A. Strigachev and B. Taylor and M. Tornikoski and C. Trigilio and Troitskaya, {Yu V.} and Troitsky, {I. S.} and G. Umana and A. Valcheva and S. Velasco and O. Vince and Wehrle, {A. E.} and H. Wiesemeyer",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.",

year = "2015",

month = jul,

day = "1",

doi = "10.1093/mnras/stv823",

language = "English (US)",

volume = "450",

pages = "2677--2691",

journal = "Monthly Notices of the Royal Astronomical Society",

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TY - JOUR

T1 - Multiwavelength behaviour of the blazar OJ 248 from radio to γ -rays

AU - Carnerero, M. I.

AU - Raiteri, C. M.

AU - Villata, M.

AU - Acosta-Pulido, J. A.

AU - D'Ammando, F.

AU - Smith, P. S.

AU - Larionov, V. M.

AU - Agudo, I.

AU - Arévalo, M. J.

AU - Arkharov, A. A.

AU - Bach, U.

AU - Bachev, R.

AU - Benítez, E.

AU - Blinov, D. A.

AU - Bozhilov, V.

AU - Buemi, C. S.

AU - Bueno Bueno, A.

AU - Carosati, D.

AU - Casadio, C.

AU - Chen, W. P.

AU - Damljanovic, G.

AU - Di Paola, A.

AU - Efimova, N. V.

AU - Ehgamberdiev, Sh A.

AU - Giroletti, M.

AU - Gómez, J. L.

AU - González-Morales, P. A.

AU - Grinon-Marin, A. B.

AU - Grishina, T. S.

AU - Gurwell, M. A.

AU - Hiriart, D.

AU - Hsiao, H. Y.

AU - Ibryamov, S.

AU - Jorstad, S. G.

AU - Joshi, M.

AU - Kopatskaya, E. N.

AU - Kurtanidze, O. M.

AU - Kurtanidze, S. O.

AU - Lähteenmäki, A.

AU - Larionova, E. G.

AU - Larionova, L. V.

AU - Lázaro, C.

AU - Leto, P.

AU - Lin, C. S.

AU - Lin, H. C.

AU - Manilla-Robles, A. I.

AU - Marscher, A. P.

AU - McHardy, I. M.

AU - Metodieva, Y.

AU - Mirzaqulov, D. O.

AU - Mokrushina, A. A.

AU - Molina, S. N.

AU - Morozova, D. A.

AU - Nikolashvili, M. G.

AU - Orienti, M.

AU - Ovcharov, E.

AU - Panwar, N.

AU - Pastor Yabar, A.

AU - Puerto Giménez, I.

AU - Ramakrishnan, V.

AU - Richter, G. M.

AU - Rossini, M.

AU - Sigua, L. A.

AU - Strigachev, A.

AU - Taylor, B.

AU - Tornikoski, M.

AU - Trigilio, C.

AU - Troitskaya, Yu V.

AU - Troitsky, I. S.

AU - Umana, G.

AU - Valcheva, A.

AU - Velasco, S.

AU - Vince, O.

AU - Wehrle, A. E.

AU - Wiesemeyer, H.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near-infrared, and radio) obtained by 21 observatories participating in the Gamma-Ray Large Area Space Telescope (GLAST)-AGILE Support Program of the Whole Earth Blazar Telescope, as well as data from the Swift (optical-UV and X-rays) and Fermi (γ -rays) satellites, to study flux and spectral variability and correlations among emissions in different bands. We take into account the effect of absorption by the Damped Lyman α intervening system at z = 0.525. Two major outbursts were observed in 2006-2007 and in 2012-2013 at optical and near-IR wavelengths, while in the high-frequency radio light curves prominent radio outbursts are visible peaking at the end of 2010 and beginning of 2013, revealing a complex radio-optical correlation. Crosscorrelation analysis suggests a delay of the optical variations after the γ -ray ones of about a month, which is a peculiar behaviour in blazars. We also analyse optical polarimetric and spectroscopic data. The average polarization percentage P is less than 3 per cent, but it reaches~19 per cent during the early stage of the 2012-2013 outburst.Avague correlation of P with brightness is observed. There is no preferred electric vector polarization angle and during the outburst the linear polarization vector shows wide rotations in both directions, suggesting a complex behaviour/structure of the jet and possible turbulence. The analysis of 140 optical spectra acquired at the Steward Observatory reveals a strong Mg II broad emission line with an essentially stable flux of 6.2 × 10-15 erg cm-2 s-1 and a full width at half-maximum of 2053 km s-1.

AB - We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near-infrared, and radio) obtained by 21 observatories participating in the Gamma-Ray Large Area Space Telescope (GLAST)-AGILE Support Program of the Whole Earth Blazar Telescope, as well as data from the Swift (optical-UV and X-rays) and Fermi (γ -rays) satellites, to study flux and spectral variability and correlations among emissions in different bands. We take into account the effect of absorption by the Damped Lyman α intervening system at z = 0.525. Two major outbursts were observed in 2006-2007 and in 2012-2013 at optical and near-IR wavelengths, while in the high-frequency radio light curves prominent radio outbursts are visible peaking at the end of 2010 and beginning of 2013, revealing a complex radio-optical correlation. Crosscorrelation analysis suggests a delay of the optical variations after the γ -ray ones of about a month, which is a peculiar behaviour in blazars. We also analyse optical polarimetric and spectroscopic data. The average polarization percentage P is less than 3 per cent, but it reaches~19 per cent during the early stage of the 2012-2013 outburst.Avague correlation of P with brightness is observed. There is no preferred electric vector polarization angle and during the outburst the linear polarization vector shows wide rotations in both directions, suggesting a complex behaviour/structure of the jet and possible turbulence. The analysis of 140 optical spectra acquired at the Steward Observatory reveals a strong Mg II broad emission line with an essentially stable flux of 6.2 × 10-15 erg cm-2 s-1 and a full width at half-maximum of 2053 km s-1.

KW - Galaxies: active

KW - Galaxies: jets

KW - Quasars: general

KW - Quasars: individual: OJ 248

UR - http://www.scopus.com/inward/record.url?scp=84930837341&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930837341&partnerID=8YFLogxK

U2 - 10.1093/mnras/stv823

DO - 10.1093/mnras/stv823

M3 - Article

AN - SCOPUS:84930837341

SN - 0035-8711

VL - 450

SP - 2677

EP - 2691

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Multiwavelength behaviour of the blazar OJ 248 from radio to γ -rays

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