The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst

Standard

The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst. / Villata, M.; Raiteri, C. M.; Gurwell, M. A.; Larionov, V. M.; Kurtanidze, O. M.; Aller, M. F.; LähteenmäKi, A.; Nilsson, K.; Agudo, I.; Aller, H. D.; Arkharov, A. A.; Bach, U.; Bachev, R.; Beltrame, P.; Benítez, E.; Buemi, C. S.; BöTtcher, M.; Calcidese, P.; Capezzali, D.; Carosati, D.; Da Rio, D.; Di Paola, A.; Dolci, M.; Dultzin, D.; Forné, E.; GóMez, J. L.; Hagen-Thorn, V. A.; Halkola, A.; Heidt, J.; Hiriart, D.; Hovatta, T.; Hsiao, H. Y.; Jorstad, S. G.; Kimeridze, G. N.; Konstantinova, T. S.; Kopatskaya, E. N.; Koptelova, E.; Leto, P.; Ligustri, R.; Lindfors, E.; Lopez, J. M.; Marscher, A. P.; Mommert, M.; Mujica, R.; Nikolashvili, M. G.; Palma, N.; Pasanen, M.; Roca-Sogorb, M.; Ros, J. A.; Roustazadeh, P.; Sadun, A. C.; Saino, J.; Sigua, L. A.; Sorcia, M.; Takalo, L. O.; Tornikoski, M.; Trigilio, C.; Turchetti, R.; Umana, G.

In: Astronomy and Astrophysics, Vol. 504, No. 3, 04.09.2009, p. L9-L12.

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

Harvard

Villata, M, Raiteri, CM, Gurwell, MA, Larionov, VM, Kurtanidze, OM, Aller, MF, LähteenmäKi, A, Nilsson, K, Agudo, I, Aller, HD, Arkharov, AA, Bach, U, Bachev, R, Beltrame, P, Benítez, E, Buemi, CS, BöTtcher, M, Calcidese, P, Capezzali, D, Carosati, D, Da Rio, D, Di Paola, A, Dolci, M, Dultzin, D, Forné, E, GóMez, JL, Hagen-Thorn, VA, Halkola, A, Heidt, J, Hiriart, D, Hovatta, T, Hsiao, HY, Jorstad, SG, Kimeridze, GN, Konstantinova, TS , Kopatskaya, EN, Koptelova, E, Leto, P, Ligustri, R, Lindfors, E, Lopez, JM, Marscher, AP, Mommert, M, Mujica, R, Nikolashvili, MG, Palma, N, Pasanen, M, Roca-Sogorb, M, Ros, JA, Roustazadeh, P, Sadun, AC, Saino, J, Sigua, LA, Sorcia, M, Takalo, LO, Tornikoski, M, Trigilio, C, Turchetti, R & Umana, G 2009, 'The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst', Astronomy and Astrophysics, vol. 504, no. 3, pp. L9-L12. https://doi.org/10.1051/0004-6361/200912732

APA

Villata, M., Raiteri, C. M., Gurwell, M. A., Larionov, V. M., Kurtanidze, O. M., Aller, M. F., LähteenmäKi, A., Nilsson, K., Agudo, I., Aller, H. D., Arkharov, A. A., Bach, U., Bachev, R., Beltrame, P., Benítez, E., Buemi, C. S., BöTtcher, M., Calcidese, P., Capezzali, D., ... Umana, G. (2009). The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst. Astronomy and Astrophysics, 504(3), L9-L12. https://doi.org/10.1051/0004-6361/200912732

Vancouver

Villata M, Raiteri CM, Gurwell MA, Larionov VM, Kurtanidze OM, Aller MF et al. The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst. Astronomy and Astrophysics. 2009 Sep 4;504(3):L9-L12. https://doi.org/10.1051/0004-6361/200912732

Author

Villata, M. ; Raiteri, C. M. ; Gurwell, M. A. ; Larionov, V. M. ; Kurtanidze, O. M. ; Aller, M. F. ; LähteenmäKi, A. ; Nilsson, K. ; Agudo, I. ; Aller, H. D. ; Arkharov, A. A. ; Bach, U. ; Bachev, R. ; Beltrame, P. ; Benítez, E. ; Buemi, C. S. ; BöTtcher, M. ; Calcidese, P. ; Capezzali, D. ; Carosati, D. ; Da Rio, D. ; Di Paola, A. ; Dolci, M. ; Dultzin, D. ; Forné, E. ; GóMez, J. L. ; Hagen-Thorn, V. A. ; Halkola, A. ; Heidt, J. ; Hiriart, D. ; Hovatta, T. ; Hsiao, H. Y. ; Jorstad, S. G. ; Kimeridze, G. N. ; Konstantinova, T. S. ; Kopatskaya, E. N. ; Koptelova, E. ; Leto, P. ; Ligustri, R. ; Lindfors, E. ; Lopez, J. M. ; Marscher, A. P. ; Mommert, M. ; Mujica, R. ; Nikolashvili, M. G. ; Palma, N. ; Pasanen, M. ; Roca-Sogorb, M. ; Ros, J. A. ; Roustazadeh, P. ; Sadun, A. C. ; Saino, J. ; Sigua, L. A. ; Sorcia, M. ; Takalo, L. O. ; Tornikoski, M. ; Trigilio, C. ; Turchetti, R. ; Umana, G. / The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst. In: Astronomy and Astrophysics. 2009 ; Vol. 504, No. 3. pp. L9-L12.

BibTeX

@article{234ba6df5c4443ceb548cd7e2548846a,

title = "The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst",

abstract = "Context. Since 2001, the radio quasar 3C 454.3 has undergone a period of high optical activity, culminating in the brightest optical state ever observed, during the 2004-2005 outburst. The Whole Earth Blazar Telescope (WEBT) consortium has carried out several multifrequency campaigns to follow the source behaviour.Aims. The GLAST-AGILE Support Program (GASP) was born from the WEBT to provide long-term continuous optical-to-radio monitoring of a sample of γ-loud blazars, during the operation of the AGILE and GLAST (now known as Fermi GST) γ-ray satellites. The main aim is to shed light on the mechanisms producing the high-energy radiation, through correlation analysis with the low-energy emission. Thus, since 2008 the monitoring task on 3C 454.3 passed from the WEBT to the GASP, while both AGILE and Fermi detected strong γ-ray emission from the source.Methods. We present the main results obtained by the GASP at optical, mm, and radio frequencies in the 2008-2009 season, and compare them with the WEBT results from previous years.Results. An optical outburst was observed to peak in mid July 2008, when Fermi detected the brightest γ-ray levels. A contemporaneous mm outburst maintained its brightness for a longer time, until the cm emission also reached the maximum levels. The behaviour compared in the three bands suggests that the variable relative brightness of the different-frequency outbursts may be due to the changing orientation of a curved inhomogeneous jet. The optical light curve is very well sampled during the entire season, which is also well covered by the various AGILE and Fermi observing periods. The relevant cross-correlation studies will be very important in constraining high-energy emission models.",

keywords = "Galaxies: active, Galaxies: jets, Galaxies: quasars: general, Galaxies: quasars: individual: 3C 454.3",

author = "M. Villata and Raiteri, {C. M.} and Gurwell, {M. A.} and Larionov, {V. M.} and Kurtanidze, {O. M.} and Aller, {M. F.} and A. L{\"a}hteenm{\"a}Ki and K. Nilsson and I. Agudo and Aller, {H. D.} and Arkharov, {A. A.} and U. Bach and R. Bachev and P. Beltrame and E. Ben{\'i}tez and Buemi, {C. S.} and M. B{\"o}Ttcher and P. Calcidese and D. Capezzali and D. Carosati and {Da Rio}, D. and {Di Paola}, A. and M. Dolci and D. Dultzin and E. Forn{\'e} and G{\'o}Mez, {J. L.} and Hagen-Thorn, {V. A.} and A. Halkola and J. Heidt and D. Hiriart and T. Hovatta and Hsiao, {H. Y.} and Jorstad, {S. G.} and Kimeridze, {G. N.} and Konstantinova, {T. S.} and Kopatskaya, {E. N.} and E. Koptelova and P. Leto and R. Ligustri and E. Lindfors and Lopez, {J. M.} and Marscher, {A. P.} and M. Mommert and R. Mujica and Nikolashvili, {M. G.} and N. Palma and M. Pasanen and M. Roca-Sogorb and Ros, {J. A.} and P. Roustazadeh and Sadun, {A. C.} and J. Saino and Sigua, {L. A.} and M. Sorcia and Takalo, {L. O.} and M. Tornikoski and C. Trigilio and R. Turchetti and G. Umana",

year = "2009",

month = sep,

day = "4",

doi = "10.1051/0004-6361/200912732",

language = "English",

volume = "504",

pages = "L9--L12",

journal = "ASTRONOMY & ASTROPHYSICS",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "3",

}

RIS

TY - JOUR

T1 - The GASP-WEBT monitoring of 3C 454.3 during the 2008 optical-to-radio and γ-ray outburst

AU - Villata, M.

AU - Raiteri, C. M.

AU - Gurwell, M. A.

AU - Larionov, V. M.

AU - Kurtanidze, O. M.

AU - Aller, M. F.

AU - LähteenmäKi, A.

AU - Nilsson, K.

AU - Agudo, I.

AU - Aller, H. D.

AU - Arkharov, A. A.

AU - Bach, U.

AU - Bachev, R.

AU - Beltrame, P.

AU - Benítez, E.

AU - Buemi, C. S.

AU - BöTtcher, M.

AU - Calcidese, P.

AU - Capezzali, D.

AU - Carosati, D.

AU - Da Rio, D.

AU - Di Paola, A.

AU - Dolci, M.

AU - Dultzin, D.

AU - Forné, E.

AU - GóMez, J. L.

AU - Hagen-Thorn, V. A.

AU - Halkola, A.

AU - Heidt, J.

AU - Hiriart, D.

AU - Hovatta, T.

AU - Hsiao, H. Y.

AU - Jorstad, S. G.

AU - Kimeridze, G. N.

AU - Konstantinova, T. S.

AU - Kopatskaya, E. N.

AU - Koptelova, E.

AU - Leto, P.

AU - Ligustri, R.

AU - Lindfors, E.

AU - Lopez, J. M.

AU - Marscher, A. P.

AU - Mommert, M.

AU - Mujica, R.

AU - Nikolashvili, M. G.

AU - Palma, N.

AU - Pasanen, M.

AU - Roca-Sogorb, M.

AU - Ros, J. A.

AU - Roustazadeh, P.

AU - Sadun, A. C.

AU - Saino, J.

AU - Sigua, L. A.

AU - Sorcia, M.

AU - Takalo, L. O.

AU - Tornikoski, M.

AU - Trigilio, C.

AU - Turchetti, R.

AU - Umana, G.

PY - 2009/9/4

Y1 - 2009/9/4

N2 - Context. Since 2001, the radio quasar 3C 454.3 has undergone a period of high optical activity, culminating in the brightest optical state ever observed, during the 2004-2005 outburst. The Whole Earth Blazar Telescope (WEBT) consortium has carried out several multifrequency campaigns to follow the source behaviour.Aims. The GLAST-AGILE Support Program (GASP) was born from the WEBT to provide long-term continuous optical-to-radio monitoring of a sample of γ-loud blazars, during the operation of the AGILE and GLAST (now known as Fermi GST) γ-ray satellites. The main aim is to shed light on the mechanisms producing the high-energy radiation, through correlation analysis with the low-energy emission. Thus, since 2008 the monitoring task on 3C 454.3 passed from the WEBT to the GASP, while both AGILE and Fermi detected strong γ-ray emission from the source.Methods. We present the main results obtained by the GASP at optical, mm, and radio frequencies in the 2008-2009 season, and compare them with the WEBT results from previous years.Results. An optical outburst was observed to peak in mid July 2008, when Fermi detected the brightest γ-ray levels. A contemporaneous mm outburst maintained its brightness for a longer time, until the cm emission also reached the maximum levels. The behaviour compared in the three bands suggests that the variable relative brightness of the different-frequency outbursts may be due to the changing orientation of a curved inhomogeneous jet. The optical light curve is very well sampled during the entire season, which is also well covered by the various AGILE and Fermi observing periods. The relevant cross-correlation studies will be very important in constraining high-energy emission models.

AB - Context. Since 2001, the radio quasar 3C 454.3 has undergone a period of high optical activity, culminating in the brightest optical state ever observed, during the 2004-2005 outburst. The Whole Earth Blazar Telescope (WEBT) consortium has carried out several multifrequency campaigns to follow the source behaviour.Aims. The GLAST-AGILE Support Program (GASP) was born from the WEBT to provide long-term continuous optical-to-radio monitoring of a sample of γ-loud blazars, during the operation of the AGILE and GLAST (now known as Fermi GST) γ-ray satellites. The main aim is to shed light on the mechanisms producing the high-energy radiation, through correlation analysis with the low-energy emission. Thus, since 2008 the monitoring task on 3C 454.3 passed from the WEBT to the GASP, while both AGILE and Fermi detected strong γ-ray emission from the source.Methods. We present the main results obtained by the GASP at optical, mm, and radio frequencies in the 2008-2009 season, and compare them with the WEBT results from previous years.Results. An optical outburst was observed to peak in mid July 2008, when Fermi detected the brightest γ-ray levels. A contemporaneous mm outburst maintained its brightness for a longer time, until the cm emission also reached the maximum levels. The behaviour compared in the three bands suggests that the variable relative brightness of the different-frequency outbursts may be due to the changing orientation of a curved inhomogeneous jet. The optical light curve is very well sampled during the entire season, which is also well covered by the various AGILE and Fermi observing periods. The relevant cross-correlation studies will be very important in constraining high-energy emission models.

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=70349522445&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/200912732

DO - 10.1051/0004-6361/200912732

M3 - Article

AN - SCOPUS:70349522445

VL - 504

SP - L9-L12

JO - ASTRONOMY & ASTROPHYSICS

JF - ASTRONOMY & ASTROPHYSICS

SN - 0004-6361

IS - 3

ER -

ID: 88378285