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The unprecedented optical outburst of the quasar 3C 454.3 the WEBT campaign of 2004-2005. / Villata, M.; Raiteri, C. M.; Balonek, T. J.; Aller, M. F.; Jorstad, S. G.; Kurtanidze, O. M.; Nicastro, F.; Nilsson, K.; Aller, H. D.; Arai, A.; Arkharov, A.; Bach, U.; Benítez, E.; Berdyugin, A.; Buemi, C. S.; Böttcher, M.; Carosati, D.; Casas, R.; Caulet, A.; Chiang, P. S.; Chou, Y.; Ciprini, S.; Coloma, J. M.; Di Rico, G.; Díaz, C.; Efimova, N. V.; Forsyth, C.; Frasca, A.; Fuhrmann, L.; Gadway, B.; Gupta, S.; Hagen-Thorn, V. A.; Harvey, J.; Heidt, J.; Hernandez-Toledo, H.; Hroch, F.; Hu, C. P.; Hudec, R.; Ibrahimov, M. A.; Imada, A.; Kamata, M.; Kato, T.; Katsuura, M.; Konstantinova, T.; Kopatskaya, E.; Kotaka, D.; Kovalev, Y. Y.; Kovalev, Yu A.; Krichbaum, T. P.; Kubota, K.; Kurosaki, M.; Lanteri, L.; Larionov, V. M.; Larionova, L.; Laurikainen, E.; Leto, P.; Lähteenmäki, A.; López-Cruz, O.; Marilli, E.; Marscher, A. P.; McHardy, M.; Mondal, S.; Mullan, B.; Napoleone, N.; Nikolashvili, M. G.; Ohlert, J. M.; Postnikov, S.; Pursimo, T.; Ragni, M.; Ros, J. A.; Sadakane, K.; Sadun, A. C.; Savolainen, T.; Sergeeva, E. A.; Sigua, L. A.; Sillanpää, A.; Sixtova, L.; Sumitomo, N.; Takalo, L. O.; Teräsranta, H.; Tornikoski, M.; Trigilio, C.; Umana, G.; Volvach, A.; Voss, B.; Wortel, S.

In: Astronomy and Astrophysics, Vol. 453, No. 3, 07.2006, p. 817-822.

Research output: Contribution to journal › Article › peer-review

Harvard

Villata, M, Raiteri, CM, Balonek, TJ, Aller, MF, Jorstad, SG, Kurtanidze, OM, Nicastro, F, Nilsson, K, Aller, HD, Arai, A, Arkharov, A, Bach, U, Benítez, E, Berdyugin, A, Buemi, CS, Böttcher, M, Carosati, D, Casas, R, Caulet, A, Chiang, PS, Chou, Y, Ciprini, S, Coloma, JM, Di Rico, G, Díaz, C, Efimova, NV, Forsyth, C, Frasca, A, Fuhrmann, L, Gadway, B, Gupta, S, Hagen-Thorn, VA, Harvey, J, Heidt, J, Hernandez-Toledo, H, Hroch, F, Hu, CP, Hudec, R, Ibrahimov, MA, Imada, A, Kamata, M, Kato, T, Katsuura, M, Konstantinova, T, Kopatskaya, E, Kotaka, D, Kovalev, YY, Kovalev, YA, Krichbaum, TP, Kubota, K, Kurosaki, M, Lanteri, L, Larionov, VM, Larionova, L, Laurikainen, E, Leto, P, Lähteenmäki, A, López-Cruz, O, Marilli, E, Marscher, AP, McHardy, M, Mondal, S, Mullan, B, Napoleone, N, Nikolashvili, MG, Ohlert, JM, Postnikov, S, Pursimo, T, Ragni, M, Ros, JA, Sadakane, K, Sadun, AC, Savolainen, T, Sergeeva, EA, Sigua, LA, Sillanpää, A, Sixtova, L, Sumitomo, N, Takalo, LO, Teräsranta, H, Tornikoski, M, Trigilio, C, Umana, G, Volvach, A, Voss, B & Wortel, S 2006, 'The unprecedented optical outburst of the quasar 3C 454.3 the WEBT campaign of 2004-2005', Astronomy and Astrophysics, vol. 453, no. 3, pp. 817-822. https://doi.org/10.1051/0004-6361:20064817

APA

Villata, M., Raiteri, C. M., Balonek, T. J., Aller, M. F., Jorstad, S. G., Kurtanidze, O. M., Nicastro, F., Nilsson, K., Aller, H. D., Arai, A., Arkharov, A., Bach, U., Benítez, E., Berdyugin, A., Buemi, C. S., Böttcher, M., Carosati, D., Casas, R., Caulet, A., ... Wortel, S. (2006). The unprecedented optical outburst of the quasar 3C 454.3 the WEBT campaign of 2004-2005. Astronomy and Astrophysics, 453(3), 817-822. https://doi.org/10.1051/0004-6361:20064817

Vancouver

Villata M, Raiteri CM, Balonek TJ, Aller MF, Jorstad SG, Kurtanidze OM et al. The unprecedented optical outburst of the quasar 3C 454.3 the WEBT campaign of 2004-2005. Astronomy and Astrophysics. 2006 Jul;453(3):817-822. https://doi.org/10.1051/0004-6361:20064817

Author

Villata, M. ; Raiteri, C. M. ; Balonek, T. J. ; Aller, M. F. ; Jorstad, S. G. ; Kurtanidze, O. M. ; Nicastro, F. ; Nilsson, K. ; Aller, H. D. ; Arai, A. ; Arkharov, A. ; Bach, U. ; Benítez, E. ; Berdyugin, A. ; Buemi, C. S. ; Böttcher, M. ; Carosati, D. ; Casas, R. ; Caulet, A. ; Chiang, P. S. ; Chou, Y. ; Ciprini, S. ; Coloma, J. M. ; Di Rico, G. ; Díaz, C. ; Efimova, N. V. ; Forsyth, C. ; Frasca, A. ; Fuhrmann, L. ; Gadway, B. ; Gupta, S. ; Hagen-Thorn, V. A. ; Harvey, J. ; Heidt, J. ; Hernandez-Toledo, H. ; Hroch, F. ; Hu, C. P. ; Hudec, R. ; Ibrahimov, M. A. ; Imada, A. ; Kamata, M. ; Kato, T. ; Katsuura, M. ; Konstantinova, T. ; Kopatskaya, E. ; Kotaka, D. ; Kovalev, Y. Y. ; Kovalev, Yu A. ; Krichbaum, T. P. ; Kubota, K. ; Kurosaki, M. ; Lanteri, L. ; Larionov, V. M. ; Larionova, L. ; Laurikainen, E. ; Leto, P. ; Lähteenmäki, A. ; López-Cruz, O. ; Marilli, E. ; Marscher, A. P. ; McHardy, M. ; Mondal, S. ; Mullan, B. ; Napoleone, N. ; Nikolashvili, M. G. ; Ohlert, J. M. ; Postnikov, S. ; Pursimo, T. ; Ragni, M. ; Ros, J. A. ; Sadakane, K. ; Sadun, A. C. ; Savolainen, T. ; Sergeeva, E. A. ; Sigua, L. A. ; Sillanpää, A. ; Sixtova, L. ; Sumitomo, N. ; Takalo, L. O. ; Teräsranta, H. ; Tornikoski, M. ; Trigilio, C. ; Umana, G. ; Volvach, A. ; Voss, B. ; Wortel, S. / The unprecedented optical outburst of the quasar 3C 454.3 the WEBT campaign of 2004-2005. In: Astronomy and Astrophysics. 2006 ; Vol. 453, No. 3. pp. 817-822.

BibTeX

@article{3a29fb35b6da4658a08e28f2c319c23b,
title = "The unprecedented optical outburst of the quasar 3C 454.3 the WEBT campaign of 2004-2005",
abstract = "Context. The radio quasar 3C 454.3 underwent an exceptional optical outburst lasting more than 1 year and culminating in spring 2005. The maximum brightness detected was R = 12.0, which represents the most luminous quasar state thus far observed (MB ∼ -31.4). Aims. In order to follow the emission behaviour of the source in detail, a large multiwavelength campaign was organized by the Whole Earth Blazar Telescope (WEBT). Methods. Continuous optical, near-IR and radio monitoring was performed in several bands. ToO pointings by the Chandra and INTEGRAL satellites provided additional information at high energies in May 2005. Results. The historical radio and optical light curves show different behaviours. Until about 2001.0 only moderate variability was present in the optical regime, while prominent and long-lasting radio outbursts were visible at the various radio frequencies, with higher-frequency variations preceding the lower-frequency ones. After that date, the optical activity increased and the radio flux is less variable. This suggests that the optical and radio emissions come from two separate and misaligned jet regions, with the inner optical one acquiring a smaller viewing angle during the 2004-2005 outburst. Moreover, the colour-index behaviour (generally redder-when-brighter) during the outburst suggests the presence of a luminous accretion disc. A huge mm outburst followed the optical one, peaking in June-July 2005. The high-frequency (37-43 GHz) radio flux started to increase in early 2005 and reached a maximum at the end of our observing period (end of September 2005). VLBA observations at 43 GHz during the summer confirm the brightening of the radio core and show an increasing polarization. An exceptionally bright X-ray state was detected in May 2005, corresponding to the rising mm flux and suggesting an inverse-Compton nature of the hard X-ray spectrum. Conclusions. A further multifrequency monitoring effort is needed to follow the next phases of this unprecedented event.",
keywords = "Galaxies: active, Galaxies: jets, Galaxies: quasars: general, Galaxies: quasars: individual: 3C 454.3",
author = "M. Villata and Raiteri, {C. M.} and Balonek, {T. J.} and Aller, {M. F.} and Jorstad, {S. G.} and Kurtanidze, {O. M.} and F. Nicastro and K. Nilsson and Aller, {H. D.} and A. Arai and A. Arkharov and U. Bach and E. Ben{\'i}tez and A. Berdyugin and Buemi, {C. S.} and M. B{\"o}ttcher and D. Carosati and R. Casas and A. Caulet and Chiang, {P. S.} and Y. Chou and S. Ciprini and Coloma, {J. M.} and {Di Rico}, G. and C. D{\'i}az and Efimova, {N. V.} and C. Forsyth and A. Frasca and L. Fuhrmann and B. Gadway and S. Gupta and Hagen-Thorn, {V. A.} and J. Harvey and J. Heidt and H. Hernandez-Toledo and F. Hroch and Hu, {C. P.} and R. Hudec and Ibrahimov, {M. A.} and A. Imada and M. Kamata and T. Kato and M. Katsuura and T. Konstantinova and E. Kopatskaya and D. Kotaka and Kovalev, {Y. Y.} and Kovalev, {Yu A.} and Krichbaum, {T. P.} and K. Kubota and M. Kurosaki and L. Lanteri and Larionov, {V. M.} and L. Larionova and E. Laurikainen and P. Leto and A. L{\"a}hteenm{\"a}ki and O. L{\'o}pez-Cruz and E. Marilli and Marscher, {A. P.} and M. McHardy and S. Mondal and B. Mullan and N. Napoleone and Nikolashvili, {M. G.} and Ohlert, {J. M.} and S. Postnikov and T. Pursimo and M. Ragni and Ros, {J. A.} and K. Sadakane and Sadun, {A. C.} and T. Savolainen and Sergeeva, {E. A.} and Sigua, {L. A.} and A. Sillanp{\"a}{\"a} and L. Sixtova and N. Sumitomo and Takalo, {L. O.} and H. Ter{\"a}sranta and M. Tornikoski and C. Trigilio and G. Umana and A. Volvach and B. Voss and S. Wortel",
year = "2006",
month = jul,
doi = "10.1051/0004-6361:20064817",
language = "English",
volume = "453",
pages = "817--822",
journal = "ASTRONOMY & ASTROPHYSICS",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "3",

}

RIS

TY - JOUR

T1 - The unprecedented optical outburst of the quasar 3C 454.3 the WEBT campaign of 2004-2005

AU - Villata, M.

AU - Raiteri, C. M.

AU - Balonek, T. J.

AU - Aller, M. F.

AU - Jorstad, S. G.

AU - Kurtanidze, O. M.

AU - Nicastro, F.

AU - Nilsson, K.

AU - Aller, H. D.

AU - Arai, A.

AU - Arkharov, A.

AU - Bach, U.

AU - Benítez, E.

AU - Berdyugin, A.

AU - Buemi, C. S.

AU - Böttcher, M.

AU - Carosati, D.

AU - Casas, R.

AU - Caulet, A.

AU - Chiang, P. S.

AU - Chou, Y.

AU - Ciprini, S.

AU - Coloma, J. M.

AU - Di Rico, G.

AU - Díaz, C.

AU - Efimova, N. V.

AU - Forsyth, C.

AU - Frasca, A.

AU - Fuhrmann, L.

AU - Gadway, B.

AU - Gupta, S.

AU - Hagen-Thorn, V. A.

AU - Harvey, J.

AU - Heidt, J.

AU - Hernandez-Toledo, H.

AU - Hroch, F.

AU - Hu, C. P.

AU - Hudec, R.

AU - Ibrahimov, M. A.

AU - Imada, A.

AU - Kamata, M.

AU - Kato, T.

AU - Katsuura, M.

AU - Konstantinova, T.

AU - Kopatskaya, E.

AU - Kotaka, D.

AU - Kovalev, Y. Y.

AU - Kovalev, Yu A.

AU - Krichbaum, T. P.

AU - Kubota, K.

AU - Kurosaki, M.

AU - Lanteri, L.

AU - Larionov, V. M.

AU - Larionova, L.

AU - Laurikainen, E.

AU - Leto, P.

AU - Lähteenmäki, A.

AU - López-Cruz, O.

AU - Marilli, E.

AU - Marscher, A. P.

AU - McHardy, M.

AU - Mondal, S.

AU - Mullan, B.

AU - Napoleone, N.

AU - Nikolashvili, M. G.

AU - Ohlert, J. M.

AU - Postnikov, S.

AU - Pursimo, T.

AU - Ragni, M.

AU - Ros, J. A.

AU - Sadakane, K.

AU - Sadun, A. C.

AU - Savolainen, T.

AU - Sergeeva, E. A.

AU - Sigua, L. A.

AU - Sillanpää, A.

AU - Sixtova, L.

AU - Sumitomo, N.

AU - Takalo, L. O.

AU - Teräsranta, H.

AU - Tornikoski, M.

AU - Trigilio, C.

AU - Umana, G.

AU - Volvach, A.

AU - Voss, B.

AU - Wortel, S.

PY - 2006/7

Y1 - 2006/7

N2 - Context. The radio quasar 3C 454.3 underwent an exceptional optical outburst lasting more than 1 year and culminating in spring 2005. The maximum brightness detected was R = 12.0, which represents the most luminous quasar state thus far observed (MB ∼ -31.4). Aims. In order to follow the emission behaviour of the source in detail, a large multiwavelength campaign was organized by the Whole Earth Blazar Telescope (WEBT). Methods. Continuous optical, near-IR and radio monitoring was performed in several bands. ToO pointings by the Chandra and INTEGRAL satellites provided additional information at high energies in May 2005. Results. The historical radio and optical light curves show different behaviours. Until about 2001.0 only moderate variability was present in the optical regime, while prominent and long-lasting radio outbursts were visible at the various radio frequencies, with higher-frequency variations preceding the lower-frequency ones. After that date, the optical activity increased and the radio flux is less variable. This suggests that the optical and radio emissions come from two separate and misaligned jet regions, with the inner optical one acquiring a smaller viewing angle during the 2004-2005 outburst. Moreover, the colour-index behaviour (generally redder-when-brighter) during the outburst suggests the presence of a luminous accretion disc. A huge mm outburst followed the optical one, peaking in June-July 2005. The high-frequency (37-43 GHz) radio flux started to increase in early 2005 and reached a maximum at the end of our observing period (end of September 2005). VLBA observations at 43 GHz during the summer confirm the brightening of the radio core and show an increasing polarization. An exceptionally bright X-ray state was detected in May 2005, corresponding to the rising mm flux and suggesting an inverse-Compton nature of the hard X-ray spectrum. Conclusions. A further multifrequency monitoring effort is needed to follow the next phases of this unprecedented event.

AB - Context. The radio quasar 3C 454.3 underwent an exceptional optical outburst lasting more than 1 year and culminating in spring 2005. The maximum brightness detected was R = 12.0, which represents the most luminous quasar state thus far observed (MB ∼ -31.4). Aims. In order to follow the emission behaviour of the source in detail, a large multiwavelength campaign was organized by the Whole Earth Blazar Telescope (WEBT). Methods. Continuous optical, near-IR and radio monitoring was performed in several bands. ToO pointings by the Chandra and INTEGRAL satellites provided additional information at high energies in May 2005. Results. The historical radio and optical light curves show different behaviours. Until about 2001.0 only moderate variability was present in the optical regime, while prominent and long-lasting radio outbursts were visible at the various radio frequencies, with higher-frequency variations preceding the lower-frequency ones. After that date, the optical activity increased and the radio flux is less variable. This suggests that the optical and radio emissions come from two separate and misaligned jet regions, with the inner optical one acquiring a smaller viewing angle during the 2004-2005 outburst. Moreover, the colour-index behaviour (generally redder-when-brighter) during the outburst suggests the presence of a luminous accretion disc. A huge mm outburst followed the optical one, peaking in June-July 2005. The high-frequency (37-43 GHz) radio flux started to increase in early 2005 and reached a maximum at the end of our observing period (end of September 2005). VLBA observations at 43 GHz during the summer confirm the brightening of the radio core and show an increasing polarization. An exceptionally bright X-ray state was detected in May 2005, corresponding to the rising mm flux and suggesting an inverse-Compton nature of the hard X-ray spectrum. Conclusions. A further multifrequency monitoring effort is needed to follow the next phases of this unprecedented event.

KW - Galaxies: active

KW - Galaxies: jets

KW - Galaxies: quasars: general

KW - Galaxies: quasars: individual: 3C 454.3

UR - http://www.scopus.com/inward/record.url?scp=33746097365&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:20064817

DO - 10.1051/0004-6361:20064817

M3 - Article

AN - SCOPUS:33746097365

VL - 453

SP - 817

EP - 822

JO - ASTRONOMY & ASTROPHYSICS

JF - ASTRONOMY & ASTROPHYSICS

SN - 0004-6361

IS - 3

ER -

ID: 88373489