Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign

I. Donnarumma, G. Pucella, V. Vittorini, F. D'Ammando, S. Vercellone, C. M. Raiteri, M. Villata, M. Perri, W. P. Chen, R. L. Smart, Jun Kataoka, N. Kawai, Y. Mori, G. Tosti, D. Impiombato, T. Takahashi, R. Sato, M. Tavani, A. Bulgarelli, A. W. ChenA. Giuliani, F. Longo, L. Pacciani, A. Argan, G. Barbiellini, F. Boffelli, P. Caraveo, P. W. Cattaneo, V. Cocco, T. Contessi, E. Costa, E. Del Monte, G. De Paris, G. Di Cocco, Y. Evangelista, M. Feroci, A. Ferrari, M. Fiorini, T. Froysland, M. Frutti, F. Fuschino, M. Galli, F. Gianotti, C. Labanti, I. Lapshov, F. Lazzarotto, P. Lipari, M. Marisaldi, M. Mastropietro, S. Mereghetti, E. Morelli, E. Moretti, A. Morselli, A. Pellizzoni, F. Perotti, G. Piano, P. Picozza, M. Pilia, G. Porrovecchio, M. Prest, M. Rapisarda, A. Rappoldi, A. Rubini, S. Sabatini, E. Scalise, P. Soffitta, E. Striani, M. Trifoglio, A. Trois, E. Vallazza, A. Zambra, D. Zanello, C. Pittori, P. Santolamazza, F. Verrecchia, P. Giommi, L. A. Antonelli, S. Colafrancesco, L. Salotti

研究成果: Article

31 引用 (Scopus)

抄録

We report on the second Astrorivelatore Gamma a Immagini Leggero (AGILE) multiwavelength campaign of the blazar 3C 454.3 during the first half of 2007 December. This campaign involved AGILE, Spitzer, Swift, Suzaku, the Whole Earth Blazar Telescope (WEBT) consortium, the Rapid Eye Mount (REM), and the Multicolor Imaging Telescopes for Survey and Monstrous Explosions (MITSuME) telescopes, offering a broadband coverage that allowed for a simultaneous sampling of the synchrotron and inverse Compton (IC) emissions. The two-week AGILE monitoring was accompanied by radio to optical monitoring by WEBT and REM, and by sparse observations in mid-infrared and soft/hard X-ray energy bands performed by means of Target of Opportunity observations by Spitzer, Swift, and Suzaku, respectively. The source was detected with an average flux of ∼250 × 10-8photonscm-2s-1 above 100 MeV, typical of its flaring states. The simultaneous optical and γ-ray monitoring allowed us to study the time lag associated with the variability in the two energy bands, resulting in a possible ≲one-day delay of the γ-ray emission with respect to the optical one. From the simultaneous optical and γ-ray fast flare detected on December 12, we can constrain the delay between the γ-ray and optical emissions within 12 hr. Moreover, we obtain three spectral energy distributions (SEDs) with simultaneous data for 2007 December 5, 13, and 15, characterized by the widest multifrequency coverage. We found that a model with an external Compton on seed photons by a standard disk and reprocessed by the broad-line regions does not describe in a satisfactory way the SEDs of 2007 December 5, 13, and 15. An additional contribution, possibly from the hot corona with T = 106 K surrounding the jet, is required to account simultaneously for the softness of the synchrotron and the hardness of the IC emissions during those epochs.

元の言語English
ページ(範囲)1115-1123
ページ数9
ジャーナルAstrophysical Journal
707
発行部数2
DOI
出版物ステータスPublished - 2009
外部発表Yes

Fingerprint

rays
telescopes
spectral energy distribution
energy bands
energy
synchrotrons
monitoring
softness
coronas
flares
hardness
corona
light emission
explosions
explosion
seeds
time lag
sampling
time measurement
radio

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

これを引用

Donnarumma, I., Pucella, G., Vittorini, V., D'Ammando, F., Vercellone, S., Raiteri, C. M., ... Salotti, L. (2009). Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign. Astrophysical Journal, 707(2), 1115-1123. https://doi.org/10.1088/0004-637X/707/2/1115

Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign. / Donnarumma, I.; Pucella, G.; Vittorini, V.; D'Ammando, F.; Vercellone, S.; Raiteri, C. M.; Villata, M.; Perri, M.; Chen, W. P.; Smart, R. L.; Kataoka, Jun; Kawai, N.; Mori, Y.; Tosti, G.; Impiombato, D.; Takahashi, T.; Sato, R.; Tavani, M.; Bulgarelli, A.; Chen, A. W.; Giuliani, A.; Longo, F.; Pacciani, L.; Argan, A.; Barbiellini, G.; Boffelli, F.; Caraveo, P.; Cattaneo, P. W.; Cocco, V.; Contessi, T.; Costa, E.; Monte, E. Del; De Paris, G.; Cocco, G. Di; Evangelista, Y.; Feroci, M.; Ferrari, A.; Fiorini, M.; Froysland, T.; Frutti, M.; Fuschino, F.; Galli, M.; Gianotti, F.; Labanti, C.; Lapshov, I.; Lazzarotto, F.; Lipari, P.; Marisaldi, M.; Mastropietro, M.; Mereghetti, S.; Morelli, E.; Moretti, E.; Morselli, A.; Pellizzoni, A.; Perotti, F.; Piano, G.; Picozza, P.; Pilia, M.; Porrovecchio, G.; Prest, M.; Rapisarda, M.; Rappoldi, A.; Rubini, A.; Sabatini, S.; Scalise, E.; Soffitta, P.; Striani, E.; Trifoglio, M.; Trois, A.; Vallazza, E.; Zambra, A.; Zanello, D.; Pittori, C.; Santolamazza, P.; Verrecchia, F.; Giommi, P.; Antonelli, L. A.; Colafrancesco, S.; Salotti, L.

:: Astrophysical Journal, 巻 707, 番号 2, 2009, p. 1115-1123.

研究成果: Article

Donnarumma, I, Pucella, G, Vittorini, V, D'Ammando, F, Vercellone, S, Raiteri, CM, Villata, M, Perri, M, Chen, WP, Smart, RL, Kataoka, J, Kawai, N, Mori, Y, Tosti, G, Impiombato, D, Takahashi, T, Sato, R, Tavani, M, Bulgarelli, A, Chen, AW, Giuliani, A, Longo, F, Pacciani, L, Argan, A, Barbiellini, G, Boffelli, F, Caraveo, P, Cattaneo, PW, Cocco, V, Contessi, T, Costa, E, Monte, ED, De Paris, G, Cocco, GD, Evangelista, Y, Feroci, M, Ferrari, A, Fiorini, M, Froysland, T, Frutti, M, Fuschino, F, Galli, M, Gianotti, F, Labanti, C, Lapshov, I, Lazzarotto, F, Lipari, P, Marisaldi, M, Mastropietro, M, Mereghetti, S, Morelli, E, Moretti, E, Morselli, A, Pellizzoni, A, Perotti, F, Piano, G, Picozza, P, Pilia, M, Porrovecchio, G, Prest, M, Rapisarda, M, Rappoldi, A, Rubini, A, Sabatini, S, Scalise, E, Soffitta, P, Striani, E, Trifoglio, M, Trois, A, Vallazza, E, Zambra, A, Zanello, D, Pittori, C, Santolamazza, P, Verrecchia, F, Giommi, P, Antonelli, LA, Colafrancesco, S & Salotti, L 2009, 'Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign', Astrophysical Journal, 巻. 707, 番号 2, pp. 1115-1123. https://doi.org/10.1088/0004-637X/707/2/1115
Donnarumma I, Pucella G, Vittorini V, D'Ammando F, Vercellone S, Raiteri CM その他. Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign. Astrophysical Journal. 2009;707(2):1115-1123. https://doi.org/10.1088/0004-637X/707/2/1115
Donnarumma, I. ; Pucella, G. ; Vittorini, V. ; D'Ammando, F. ; Vercellone, S. ; Raiteri, C. M. ; Villata, M. ; Perri, M. ; Chen, W. P. ; Smart, R. L. ; Kataoka, Jun ; Kawai, N. ; Mori, Y. ; Tosti, G. ; Impiombato, D. ; Takahashi, T. ; Sato, R. ; Tavani, M. ; Bulgarelli, A. ; Chen, A. W. ; Giuliani, A. ; Longo, F. ; Pacciani, L. ; Argan, A. ; Barbiellini, G. ; Boffelli, F. ; Caraveo, P. ; Cattaneo, P. W. ; Cocco, V. ; Contessi, T. ; Costa, E. ; Monte, E. Del ; De Paris, G. ; Cocco, G. Di ; Evangelista, Y. ; Feroci, M. ; Ferrari, A. ; Fiorini, M. ; Froysland, T. ; Frutti, M. ; Fuschino, F. ; Galli, M. ; Gianotti, F. ; Labanti, C. ; Lapshov, I. ; Lazzarotto, F. ; Lipari, P. ; Marisaldi, M. ; Mastropietro, M. ; Mereghetti, S. ; Morelli, E. ; Moretti, E. ; Morselli, A. ; Pellizzoni, A. ; Perotti, F. ; Piano, G. ; Picozza, P. ; Pilia, M. ; Porrovecchio, G. ; Prest, M. ; Rapisarda, M. ; Rappoldi, A. ; Rubini, A. ; Sabatini, S. ; Scalise, E. ; Soffitta, P. ; Striani, E. ; Trifoglio, M. ; Trois, A. ; Vallazza, E. ; Zambra, A. ; Zanello, D. ; Pittori, C. ; Santolamazza, P. ; Verrecchia, F. ; Giommi, P. ; Antonelli, L. A. ; Colafrancesco, S. ; Salotti, L. / Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign. :: Astrophysical Journal. 2009 ; 巻 707, 番号 2. pp. 1115-1123.
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title = "Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign",
abstract = "We report on the second Astrorivelatore Gamma a Immagini Leggero (AGILE) multiwavelength campaign of the blazar 3C 454.3 during the first half of 2007 December. This campaign involved AGILE, Spitzer, Swift, Suzaku, the Whole Earth Blazar Telescope (WEBT) consortium, the Rapid Eye Mount (REM), and the Multicolor Imaging Telescopes for Survey and Monstrous Explosions (MITSuME) telescopes, offering a broadband coverage that allowed for a simultaneous sampling of the synchrotron and inverse Compton (IC) emissions. The two-week AGILE monitoring was accompanied by radio to optical monitoring by WEBT and REM, and by sparse observations in mid-infrared and soft/hard X-ray energy bands performed by means of Target of Opportunity observations by Spitzer, Swift, and Suzaku, respectively. The source was detected with an average flux of ∼250 × 10-8photonscm-2s-1 above 100 MeV, typical of its flaring states. The simultaneous optical and γ-ray monitoring allowed us to study the time lag associated with the variability in the two energy bands, resulting in a possible ≲one-day delay of the γ-ray emission with respect to the optical one. From the simultaneous optical and γ-ray fast flare detected on December 12, we can constrain the delay between the γ-ray and optical emissions within 12 hr. Moreover, we obtain three spectral energy distributions (SEDs) with simultaneous data for 2007 December 5, 13, and 15, characterized by the widest multifrequency coverage. We found that a model with an external Compton on seed photons by a standard disk and reprocessed by the broad-line regions does not describe in a satisfactory way the SEDs of 2007 December 5, 13, and 15. An additional contribution, possibly from the hot corona with T = 106 K surrounding the jet, is required to account simultaneously for the softness of the synchrotron and the hardness of the IC emissions during those epochs.",
keywords = "Galaxies: active, Galaxies: individual (3C 454.3), Galaxies: jets, Gamma rays: observations, Quasars: general, Radiation mechanisms: non-thermal",
author = "I. Donnarumma and G. Pucella and V. Vittorini and F. D'Ammando and S. Vercellone and Raiteri, {C. M.} and M. Villata and M. Perri and Chen, {W. P.} and Smart, {R. L.} and Jun Kataoka and N. Kawai and Y. Mori and G. Tosti and D. Impiombato and T. Takahashi and R. Sato and M. Tavani and A. Bulgarelli and Chen, {A. W.} and A. Giuliani and F. Longo and L. Pacciani and A. Argan and G. Barbiellini and F. Boffelli and P. Caraveo and Cattaneo, {P. W.} and V. Cocco and T. Contessi and E. Costa and Monte, {E. Del} and {De Paris}, G. and Cocco, {G. Di} and Y. Evangelista and M. Feroci and A. Ferrari and M. Fiorini and T. Froysland and M. Frutti and F. Fuschino and M. Galli and F. Gianotti and C. Labanti and I. Lapshov and F. Lazzarotto and P. Lipari and M. Marisaldi and M. Mastropietro and S. Mereghetti and E. Morelli and E. Moretti and A. Morselli and A. Pellizzoni and F. Perotti and G. Piano and P. Picozza and M. Pilia and G. Porrovecchio and M. Prest and M. Rapisarda and A. Rappoldi and A. Rubini and S. Sabatini and E. Scalise and P. Soffitta and E. Striani and M. Trifoglio and A. Trois and E. Vallazza and A. Zambra and D. Zanello and C. Pittori and P. Santolamazza and F. Verrecchia and P. Giommi and Antonelli, {L. A.} and S. Colafrancesco and L. Salotti",
year = "2009",
doi = "10.1088/0004-637X/707/2/1115",
language = "English",
volume = "707",
pages = "1115--1123",
journal = "Astrophysical Journal",
issn = "0004-637X",
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TY - JOUR

T1 - Multiwavelength observations of 3C 454.3. II. the agile 2007 december campaign

AU - Donnarumma, I.

AU - Pucella, G.

AU - Vittorini, V.

AU - D'Ammando, F.

AU - Vercellone, S.

AU - Raiteri, C. M.

AU - Villata, M.

AU - Perri, M.

AU - Chen, W. P.

AU - Smart, R. L.

AU - Kataoka, Jun

AU - Kawai, N.

AU - Mori, Y.

AU - Tosti, G.

AU - Impiombato, D.

AU - Takahashi, T.

AU - Sato, R.

AU - Tavani, M.

AU - Bulgarelli, A.

AU - Chen, A. W.

AU - Giuliani, A.

AU - Longo, F.

AU - Pacciani, L.

AU - Argan, A.

AU - Barbiellini, G.

AU - Boffelli, F.

AU - Caraveo, P.

AU - Cattaneo, P. W.

AU - Cocco, V.

AU - Contessi, T.

AU - Costa, E.

AU - Monte, E. Del

AU - De Paris, G.

AU - Cocco, G. Di

AU - Evangelista, Y.

AU - Feroci, M.

AU - Ferrari, A.

AU - Fiorini, M.

AU - Froysland, T.

AU - Frutti, M.

AU - Fuschino, F.

AU - Galli, M.

AU - Gianotti, F.

AU - Labanti, C.

AU - Lapshov, I.

AU - Lazzarotto, F.

AU - Lipari, P.

AU - Marisaldi, M.

AU - Mastropietro, M.

AU - Mereghetti, S.

AU - Morelli, E.

AU - Moretti, E.

AU - Morselli, A.

AU - Pellizzoni, A.

AU - Perotti, F.

AU - Piano, G.

AU - Picozza, P.

AU - Pilia, M.

AU - Porrovecchio, G.

AU - Prest, M.

AU - Rapisarda, M.

AU - Rappoldi, A.

AU - Rubini, A.

AU - Sabatini, S.

AU - Scalise, E.

AU - Soffitta, P.

AU - Striani, E.

AU - Trifoglio, M.

AU - Trois, A.

AU - Vallazza, E.

AU - Zambra, A.

AU - Zanello, D.

AU - Pittori, C.

AU - Santolamazza, P.

AU - Verrecchia, F.

AU - Giommi, P.

AU - Antonelli, L. A.

AU - Colafrancesco, S.

AU - Salotti, L.

PY - 2009

Y1 - 2009

N2 - We report on the second Astrorivelatore Gamma a Immagini Leggero (AGILE) multiwavelength campaign of the blazar 3C 454.3 during the first half of 2007 December. This campaign involved AGILE, Spitzer, Swift, Suzaku, the Whole Earth Blazar Telescope (WEBT) consortium, the Rapid Eye Mount (REM), and the Multicolor Imaging Telescopes for Survey and Monstrous Explosions (MITSuME) telescopes, offering a broadband coverage that allowed for a simultaneous sampling of the synchrotron and inverse Compton (IC) emissions. The two-week AGILE monitoring was accompanied by radio to optical monitoring by WEBT and REM, and by sparse observations in mid-infrared and soft/hard X-ray energy bands performed by means of Target of Opportunity observations by Spitzer, Swift, and Suzaku, respectively. The source was detected with an average flux of ∼250 × 10-8photonscm-2s-1 above 100 MeV, typical of its flaring states. The simultaneous optical and γ-ray monitoring allowed us to study the time lag associated with the variability in the two energy bands, resulting in a possible ≲one-day delay of the γ-ray emission with respect to the optical one. From the simultaneous optical and γ-ray fast flare detected on December 12, we can constrain the delay between the γ-ray and optical emissions within 12 hr. Moreover, we obtain three spectral energy distributions (SEDs) with simultaneous data for 2007 December 5, 13, and 15, characterized by the widest multifrequency coverage. We found that a model with an external Compton on seed photons by a standard disk and reprocessed by the broad-line regions does not describe in a satisfactory way the SEDs of 2007 December 5, 13, and 15. An additional contribution, possibly from the hot corona with T = 106 K surrounding the jet, is required to account simultaneously for the softness of the synchrotron and the hardness of the IC emissions during those epochs.

AB - We report on the second Astrorivelatore Gamma a Immagini Leggero (AGILE) multiwavelength campaign of the blazar 3C 454.3 during the first half of 2007 December. This campaign involved AGILE, Spitzer, Swift, Suzaku, the Whole Earth Blazar Telescope (WEBT) consortium, the Rapid Eye Mount (REM), and the Multicolor Imaging Telescopes for Survey and Monstrous Explosions (MITSuME) telescopes, offering a broadband coverage that allowed for a simultaneous sampling of the synchrotron and inverse Compton (IC) emissions. The two-week AGILE monitoring was accompanied by radio to optical monitoring by WEBT and REM, and by sparse observations in mid-infrared and soft/hard X-ray energy bands performed by means of Target of Opportunity observations by Spitzer, Swift, and Suzaku, respectively. The source was detected with an average flux of ∼250 × 10-8photonscm-2s-1 above 100 MeV, typical of its flaring states. The simultaneous optical and γ-ray monitoring allowed us to study the time lag associated with the variability in the two energy bands, resulting in a possible ≲one-day delay of the γ-ray emission with respect to the optical one. From the simultaneous optical and γ-ray fast flare detected on December 12, we can constrain the delay between the γ-ray and optical emissions within 12 hr. Moreover, we obtain three spectral energy distributions (SEDs) with simultaneous data for 2007 December 5, 13, and 15, characterized by the widest multifrequency coverage. We found that a model with an external Compton on seed photons by a standard disk and reprocessed by the broad-line regions does not describe in a satisfactory way the SEDs of 2007 December 5, 13, and 15. An additional contribution, possibly from the hot corona with T = 106 K surrounding the jet, is required to account simultaneously for the softness of the synchrotron and the hardness of the IC emissions during those epochs.

KW - Galaxies: active

KW - Galaxies: individual (3C 454.3)

KW - Galaxies: jets

KW - Gamma rays: observations

KW - Quasars: general

KW - Radiation mechanisms: non-thermal

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U2 - 10.1088/0004-637X/707/2/1115

DO - 10.1088/0004-637X/707/2/1115

M3 - Article

AN - SCOPUS:72849124852

VL - 707

SP - 1115

EP - 1123

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

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