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Color variations of the blazar 3C 454.3 in 2004-2006. / Hagen-Thorn, V. A.; Efimova, N. V.; Larionov, V. M.; Raiteri, C. M.; Villata, M.; Arkharov, A. A.; Hagen-Thorn, E. I.; Gomez, C. A.; Jorstad, S. G.; Larionova, L. V.; Takalo, L. O.; Sillanpää, A.

In: Astronomy Reports, Vol. 53, No. 6, 06.2009, p. 510-518.

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

Harvard

Hagen-Thorn, VA, Efimova, NV, Larionov, VM, Raiteri, CM, Villata, M, Arkharov, AA, Hagen-Thorn, EI, Gomez, CA, Jorstad, SG, Larionova, LV, Takalo, LO & Sillanpää, A 2009, 'Color variations of the blazar 3C 454.3 in 2004-2006', Astronomy Reports, vol. 53, no. 6, pp. 510-518. https://doi.org/10.1134/S1063772909060031

APA

Hagen-Thorn, V. A., Efimova, N. V., Larionov, V. M., Raiteri, C. M., Villata, M., Arkharov, A. A., Hagen-Thorn, E. I., Gomez, C. A., Jorstad, S. G., Larionova, L. V., Takalo, L. O., & Sillanpää, A. (2009). Color variations of the blazar 3C 454.3 in 2004-2006. Astronomy Reports, 53(6), 510-518. https://doi.org/10.1134/S1063772909060031

Vancouver

Hagen-Thorn VA, Efimova NV, Larionov VM, Raiteri CM, Villata M, Arkharov AA et al. Color variations of the blazar 3C 454.3 in 2004-2006. Astronomy Reports. 2009 Jun;53(6):510-518. https://doi.org/10.1134/S1063772909060031

Author

Hagen-Thorn, V. A. ; Efimova, N. V. ; Larionov, V. M. ; Raiteri, C. M. ; Villata, M. ; Arkharov, A. A. ; Hagen-Thorn, E. I. ; Gomez, C. A. ; Jorstad, S. G. ; Larionova, L. V. ; Takalo, L. O. ; Sillanpää, A. / Color variations of the blazar 3C 454.3 in 2004-2006. In: Astronomy Reports. 2009 ; Vol. 53, No. 6. pp. 510-518.

BibTeX

@article{69774629568444d39a23ae8d040c511a,
title = "Color variations of the blazar 3C 454.3 in 2004-2006",
abstract = "We present an analysis of multicolor (U BV RI JH K) observations of the blazar 3C 454.3 made in 2004-2006. We used the light curves compiled at the Turin Observatory from coordinated observations in the framework of the WEBT program. We consider color variations in two time intervals, when an unprecedented strong outburst occurred (2004-2005), and when the object was in a post-eruptive state and a low-amplitude brightness increase was observed (2006). The spectral energy distribution (SED) of the variable component remained the same within each of these intervals, but differed between them. In both cases, this SED followed a power law after correction for extinction, suggesting the variable component has a synchrotron nature. We conclude that the variations in the optical and IR were due to the same variable source. The object's unusual color behavior (the brighter, the redder) was due to an increasing contribution from a variable component that was redder than the constant component (big blue bump).",
author = "Hagen-Thorn, {V. A.} and Efimova, {N. V.} and Larionov, {V. M.} and Raiteri, {C. M.} and M. Villata and Arkharov, {A. A.} and Hagen-Thorn, {E. I.} and Gomez, {C. A.} and Jorstad, {S. G.} and Larionova, {L. V.} and Takalo, {L. O.} and A. Sillanp{\"a}{\"a}",
year = "2009",
month = jun,
doi = "10.1134/S1063772909060031",
language = "English",
volume = "53",
pages = "510--518",
journal = "Astronomy Reports",
issn = "1063-7729",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "6",

}

RIS

TY - JOUR

T1 - Color variations of the blazar 3C 454.3 in 2004-2006

AU - Hagen-Thorn, V. A.

AU - Efimova, N. V.

AU - Larionov, V. M.

AU - Raiteri, C. M.

AU - Villata, M.

AU - Arkharov, A. A.

AU - Hagen-Thorn, E. I.

AU - Gomez, C. A.

AU - Jorstad, S. G.

AU - Larionova, L. V.

AU - Takalo, L. O.

AU - Sillanpää, A.

PY - 2009/6

Y1 - 2009/6

N2 - We present an analysis of multicolor (U BV RI JH K) observations of the blazar 3C 454.3 made in 2004-2006. We used the light curves compiled at the Turin Observatory from coordinated observations in the framework of the WEBT program. We consider color variations in two time intervals, when an unprecedented strong outburst occurred (2004-2005), and when the object was in a post-eruptive state and a low-amplitude brightness increase was observed (2006). The spectral energy distribution (SED) of the variable component remained the same within each of these intervals, but differed between them. In both cases, this SED followed a power law after correction for extinction, suggesting the variable component has a synchrotron nature. We conclude that the variations in the optical and IR were due to the same variable source. The object's unusual color behavior (the brighter, the redder) was due to an increasing contribution from a variable component that was redder than the constant component (big blue bump).

AB - We present an analysis of multicolor (U BV RI JH K) observations of the blazar 3C 454.3 made in 2004-2006. We used the light curves compiled at the Turin Observatory from coordinated observations in the framework of the WEBT program. We consider color variations in two time intervals, when an unprecedented strong outburst occurred (2004-2005), and when the object was in a post-eruptive state and a low-amplitude brightness increase was observed (2006). The spectral energy distribution (SED) of the variable component remained the same within each of these intervals, but differed between them. In both cases, this SED followed a power law after correction for extinction, suggesting the variable component has a synchrotron nature. We conclude that the variations in the optical and IR were due to the same variable source. The object's unusual color behavior (the brighter, the redder) was due to an increasing contribution from a variable component that was redder than the constant component (big blue bump).

UR - http://www.scopus.com/inward/record.url?scp=67650668025&partnerID=8YFLogxK

U2 - 10.1134/S1063772909060031

DO - 10.1134/S1063772909060031

M3 - Article

AN - SCOPUS:67650668025

VL - 53

SP - 510

EP - 518

JO - Astronomy Reports

JF - Astronomy Reports

SN - 1063-7729

IS - 6

ER -

ID: 88367192