Standard

The flaring activity of blazar AO 0235+164 in 2021. / Escudero Pedrosa, Juan; Agudo, Iván; Moritz, Till; Marscher, Alan P.; Jorstad, Svetlana; Tramacere, Andrea; Casadio, Carolina; Thum, Clemens; Myserlis, Ioannis; Sievers, Albrecht; Otero-Santos, Jorge; Morcuende, Daniel; López-Coto, Rubén; D'Ammando, Filippo; Bonnoli, Giacomo; Gurwell, Mark; Gómez, José Luis; Rao, Ramprasad; Keating, Garrett.

In: Astronomy and Astrophysics, Vol. 689, A56, 30.08.2024.

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

Harvard

Escudero Pedrosa, J, Agudo, I, Moritz, T, Marscher, AP, Jorstad, S, Tramacere, A, Casadio, C, Thum, C, Myserlis, I, Sievers, A, Otero-Santos, J, Morcuende, D, López-Coto, R, D'Ammando, F, Bonnoli, G, Gurwell, M, Gómez, JL, Rao, R & Keating, G 2024, 'The flaring activity of blazar AO 0235+164 in 2021', Astronomy and Astrophysics, vol. 689, A56. https://doi.org/10.1051/0004-6361/202449726

APA

Escudero Pedrosa, J., Agudo, I., Moritz, T., Marscher, A. P., Jorstad, S., Tramacere, A., Casadio, C., Thum, C., Myserlis, I., Sievers, A., Otero-Santos, J., Morcuende, D., López-Coto, R., D'Ammando, F., Bonnoli, G., Gurwell, M., Gómez, J. L., Rao, R., & Keating, G. (2024). The flaring activity of blazar AO 0235+164 in 2021. Astronomy and Astrophysics, 689, [A56]. https://doi.org/10.1051/0004-6361/202449726

Vancouver

Escudero Pedrosa J, Agudo I, Moritz T, Marscher AP, Jorstad S, Tramacere A et al. The flaring activity of blazar AO 0235+164 in 2021. Astronomy and Astrophysics. 2024 Aug 30;689. A56. https://doi.org/10.1051/0004-6361/202449726

Author

Escudero Pedrosa, Juan ; Agudo, Iván ; Moritz, Till ; Marscher, Alan P. ; Jorstad, Svetlana ; Tramacere, Andrea ; Casadio, Carolina ; Thum, Clemens ; Myserlis, Ioannis ; Sievers, Albrecht ; Otero-Santos, Jorge ; Morcuende, Daniel ; López-Coto, Rubén ; D'Ammando, Filippo ; Bonnoli, Giacomo ; Gurwell, Mark ; Gómez, José Luis ; Rao, Ramprasad ; Keating, Garrett. / The flaring activity of blazar AO 0235+164 in 2021. In: Astronomy and Astrophysics. 2024 ; Vol. 689.

BibTeX

@article{3077ab8d3c6d4266a32888f5912ccb82,
title = "The flaring activity of blazar AO 0235+164 in 2021",
abstract = "Context. The blazar AO 0235+164, located at redshift z = 0.94, has displayed interesting and repeating flaring activity in the past, with recent episodes in 2008 and 2015. In 2020, the source brightened again, starting a new flaring episode that peaked in 2021. Aims. We study the origin and properties of the 2021 flare in relation to previous studies and the historical behavior of the source, in particular the 2008 and 2015 flaring episodes. Methods.We analyzed the multiwavelength photo-polarimetric evolution of the source. From Very Long Baseline Array images, we derived the kinematic parameters of new components associated with the 2021 flare. We used this information to constrain a model for the spectral energy distribution of the emission during the flaring period. We propose an analytical geometric model to test whether the observed wobbling of the jet is consistent with precession. Results. We report the appearance of two new components that are ejected in a different direction than previously, confirming the wobbling of the jet. We find that the direction of ejection is consistent with that of a precessing jet. Our derived period agrees with the values commonly found in the literature. Modeling of the spectral energy distribution further confirms that the differences between flares can be attributed to geometrical effects.",
keywords = "accretion, accretion disks, astroparticle physics, polarization, radiation mechanisms: general, relativistic processes, galaxies: jets, Astrophysics - High Energy Astrophysical Phenomena, Accretion, Accretion disks, Astroparticle physics, Galaxies: jets, Polarization, Radiation mechanisms: general, Relativistic processes",
author = "{Escudero Pedrosa}, Juan and Iv{\'a}n Agudo and Till Moritz and Marscher, {Alan P.} and Svetlana Jorstad and Andrea Tramacere and Carolina Casadio and Clemens Thum and Ioannis Myserlis and Albrecht Sievers and Jorge Otero-Santos and Daniel Morcuende and Rub{\'e}n L{\'o}pez-Coto and Filippo D'Ammando and Giacomo Bonnoli and Mark Gurwell and G{\'o}mez, {Jos{\'e} Luis} and Ramprasad Rao and Garrett Keating",
year = "2024",
month = aug,
day = "30",
doi = "10.1051/0004-6361/202449726",
language = "English",
volume = "689",
journal = "ASTRONOMY & ASTROPHYSICS",
issn = "0004-6361",
publisher = "EDP Sciences",

}

RIS

TY - JOUR

T1 - The flaring activity of blazar AO 0235+164 in 2021

AU - Escudero Pedrosa, Juan

AU - Agudo, Iván

AU - Moritz, Till

AU - Marscher, Alan P.

AU - Jorstad, Svetlana

AU - Tramacere, Andrea

AU - Casadio, Carolina

AU - Thum, Clemens

AU - Myserlis, Ioannis

AU - Sievers, Albrecht

AU - Otero-Santos, Jorge

AU - Morcuende, Daniel

AU - López-Coto, Rubén

AU - D'Ammando, Filippo

AU - Bonnoli, Giacomo

AU - Gurwell, Mark

AU - Gómez, José Luis

AU - Rao, Ramprasad

AU - Keating, Garrett

PY - 2024/8/30

Y1 - 2024/8/30

N2 - Context. The blazar AO 0235+164, located at redshift z = 0.94, has displayed interesting and repeating flaring activity in the past, with recent episodes in 2008 and 2015. In 2020, the source brightened again, starting a new flaring episode that peaked in 2021. Aims. We study the origin and properties of the 2021 flare in relation to previous studies and the historical behavior of the source, in particular the 2008 and 2015 flaring episodes. Methods.We analyzed the multiwavelength photo-polarimetric evolution of the source. From Very Long Baseline Array images, we derived the kinematic parameters of new components associated with the 2021 flare. We used this information to constrain a model for the spectral energy distribution of the emission during the flaring period. We propose an analytical geometric model to test whether the observed wobbling of the jet is consistent with precession. Results. We report the appearance of two new components that are ejected in a different direction than previously, confirming the wobbling of the jet. We find that the direction of ejection is consistent with that of a precessing jet. Our derived period agrees with the values commonly found in the literature. Modeling of the spectral energy distribution further confirms that the differences between flares can be attributed to geometrical effects.

AB - Context. The blazar AO 0235+164, located at redshift z = 0.94, has displayed interesting and repeating flaring activity in the past, with recent episodes in 2008 and 2015. In 2020, the source brightened again, starting a new flaring episode that peaked in 2021. Aims. We study the origin and properties of the 2021 flare in relation to previous studies and the historical behavior of the source, in particular the 2008 and 2015 flaring episodes. Methods.We analyzed the multiwavelength photo-polarimetric evolution of the source. From Very Long Baseline Array images, we derived the kinematic parameters of new components associated with the 2021 flare. We used this information to constrain a model for the spectral energy distribution of the emission during the flaring period. We propose an analytical geometric model to test whether the observed wobbling of the jet is consistent with precession. Results. We report the appearance of two new components that are ejected in a different direction than previously, confirming the wobbling of the jet. We find that the direction of ejection is consistent with that of a precessing jet. Our derived period agrees with the values commonly found in the literature. Modeling of the spectral energy distribution further confirms that the differences between flares can be attributed to geometrical effects.

KW - accretion

KW - accretion disks

KW - astroparticle physics

KW - polarization

KW - radiation mechanisms: general

KW - relativistic processes

KW - galaxies: jets

KW - Astrophysics - High Energy Astrophysical Phenomena

KW - Accretion

KW - Accretion disks

KW - Astroparticle physics

KW - Galaxies: jets

KW - Polarization

KW - Radiation mechanisms: general

KW - Relativistic processes

UR - https://www.mendeley.com/catalogue/12cf9911-400e-3b47-8090-95140a070836/

U2 - 10.1051/0004-6361/202449726

DO - 10.1051/0004-6361/202449726

M3 - Article

VL - 689

JO - ASTRONOMY & ASTROPHYSICS

JF - ASTRONOMY & ASTROPHYSICS

SN - 0004-6361

M1 - A56

ER -

ID: 125281696