Standard

POLAMI Multiwavelength Polarization Study of Active Galactic Nuclei Jets: A Millimeter–Optical Comparison. / Casadio, Carolina; Blinov, Dmitry; Agudo, Iván; Myserlis, Ioannis; Thum, Clemens; Jorstad, Svetlana; Marscher, Alan; Zhang, Haocheng; Pedrosa, Juan Escudero; Álvarez-Ortega, Diego; Weaver, Zachary R.; Joshi, Manasvita; McCall, Callum; Jermak, Helen; Steele, Iain A.; Borman, George A.; Grishina, Tatiana S.; Larionova, Elena G.; Morozova, Daria A.; Savchenko, Sergey S.; Troitskiy, Ivan S.; Troitskaya, Yulia V.; Vasilyev, Andrey A.

In: The Astrophysical Journal Supplement Series, Vol. 283, No. 1, 13, 01.03.2026.

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

Harvard

Casadio, C, Blinov, D, Agudo, I, Myserlis, I, Thum, C, Jorstad, S, Marscher, A, Zhang, H, Pedrosa, JE, Álvarez-Ortega, D, Weaver, ZR, Joshi, M, McCall, C, Jermak, H, Steele, IA, Borman, GA, Grishina, TS, Larionova, EG, Morozova, DA, Savchenko, SS, Troitskiy, IS, Troitskaya, YV & Vasilyev, AA 2026, 'POLAMI Multiwavelength Polarization Study of Active Galactic Nuclei Jets: A Millimeter–Optical Comparison', The Astrophysical Journal Supplement Series, vol. 283, no. 1, 13. https://doi.org/10.3847/1538-4365/ae39c7

APA

Casadio, C., Blinov, D., Agudo, I., Myserlis, I., Thum, C., Jorstad, S., Marscher, A., Zhang, H., Pedrosa, J. E., Álvarez-Ortega, D., Weaver, Z. R., Joshi, M., McCall, C., Jermak, H., Steele, I. A., Borman, G. A., Grishina, T. S., Larionova, E. G., Morozova, D. A., ... Vasilyev, A. A. (2026). POLAMI Multiwavelength Polarization Study of Active Galactic Nuclei Jets: A Millimeter–Optical Comparison. The Astrophysical Journal Supplement Series, 283(1), [13]. https://doi.org/10.3847/1538-4365/ae39c7

Vancouver

Casadio C, Blinov D, Agudo I, Myserlis I, Thum C, Jorstad S et al. POLAMI Multiwavelength Polarization Study of Active Galactic Nuclei Jets: A Millimeter–Optical Comparison. The Astrophysical Journal Supplement Series. 2026 Mar 1;283(1). 13. https://doi.org/10.3847/1538-4365/ae39c7

Author

Casadio, Carolina ; Blinov, Dmitry ; Agudo, Iván ; Myserlis, Ioannis ; Thum, Clemens ; Jorstad, Svetlana ; Marscher, Alan ; Zhang, Haocheng ; Pedrosa, Juan Escudero ; Álvarez-Ortega, Diego ; Weaver, Zachary R. ; Joshi, Manasvita ; McCall, Callum ; Jermak, Helen ; Steele, Iain A. ; Borman, George A. ; Grishina, Tatiana S. ; Larionova, Elena G. ; Morozova, Daria A. ; Savchenko, Sergey S. ; Troitskiy, Ivan S. ; Troitskaya, Yulia V. ; Vasilyev, Andrey A. / POLAMI Multiwavelength Polarization Study of Active Galactic Nuclei Jets: A Millimeter–Optical Comparison. In: The Astrophysical Journal Supplement Series. 2026 ; Vol. 283, No. 1.

BibTeX

@article{741ad89ce6e646f7a56df35cc85618ab,
title = "POLAMI Multiwavelength Polarization Study of Active Galactic Nuclei Jets: A Millimeter–Optical Comparison",
abstract = "Millimeter-band polarimetry offers a powerful probe of active galactic nuclei jets, accessing regions less affected by opacity and Faraday rotation than at longer radio wavelengths. As part of the POLAMI program, we have conducted 14 yr of 1 and 3 mm polarization monitoring of a sample of gamma-ray-bright blazars with the IRAM 30 m telescope, complemented here with long-term optical polarimetric observations from multiple facilities. We aim to test whether current models of parsec-scale jet physics are consistent with observed multiband polarization behavior. Using a Bayesian framework, we derive intrinsic mean flux densities and modulation indices for total flux and fractional polarization, and characterize electric vector position angle (EVPA) variability using circular statistics. We then examine how these quantities reflecting variability properties across millimeter and optical bands relate to synchrotron peak frequency, jet orientation, and radio/gamma-ray luminosities. BL Lacertae (BL Lac) objects exhibit, on average, higher fractional polarization and lower EVPA variability than flat-spectrum radio quasars (FSRQs) at all wavelengths. Fractional polarization increases with frequency, consistent with increasingly ordered magnetic fields at shorter wavelengths. BL Lacs also show more frequent alignment of EVPAs between optical and millimeter bands, whereas FSRQs display weaker coherence. EVPA variability correlates positively with radio and gamma-ray luminosities and negatively with synchrotron peak frequency, most strongly in the optical. We further find a positive correlation between EVPA spread and fractional polarization variability, suggesting a direct link between magnetic-field structure and polarization dynamics.",
author = "Carolina Casadio and Dmitry Blinov and Iv{\'a}n Agudo and Ioannis Myserlis and Clemens Thum and Svetlana Jorstad and Alan Marscher and Haocheng Zhang and Pedrosa, {Juan Escudero} and Diego {\'A}lvarez-Ortega and Weaver, {Zachary R.} and Manasvita Joshi and Callum McCall and Helen Jermak and Steele, {Iain A.} and Borman, {George A.} and Grishina, {Tatiana S.} and Larionova, {Elena G.} and Morozova, {Daria A.} and Savchenko, {Sergey S.} and Troitskiy, {Ivan S.} and Troitskaya, {Yulia V.} and Vasilyev, {Andrey A.}",
year = "2026",
month = mar,
day = "1",
doi = "10.3847/1538-4365/ae39c7",
language = "English",
volume = "283",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
publisher = "IOP Publishing Ltd.",
number = "1",

}

RIS

TY - JOUR

T1 - POLAMI Multiwavelength Polarization Study of Active Galactic Nuclei Jets: A Millimeter–Optical Comparison

AU - Casadio, Carolina

AU - Blinov, Dmitry

AU - Agudo, Iván

AU - Myserlis, Ioannis

AU - Thum, Clemens

AU - Jorstad, Svetlana

AU - Marscher, Alan

AU - Zhang, Haocheng

AU - Pedrosa, Juan Escudero

AU - Álvarez-Ortega, Diego

AU - Weaver, Zachary R.

AU - Joshi, Manasvita

AU - McCall, Callum

AU - Jermak, Helen

AU - Steele, Iain A.

AU - Borman, George A.

AU - Grishina, Tatiana S.

AU - Larionova, Elena G.

AU - Morozova, Daria A.

AU - Savchenko, Sergey S.

AU - Troitskiy, Ivan S.

AU - Troitskaya, Yulia V.

AU - Vasilyev, Andrey A.

PY - 2026/3/1

Y1 - 2026/3/1

N2 - Millimeter-band polarimetry offers a powerful probe of active galactic nuclei jets, accessing regions less affected by opacity and Faraday rotation than at longer radio wavelengths. As part of the POLAMI program, we have conducted 14 yr of 1 and 3 mm polarization monitoring of a sample of gamma-ray-bright blazars with the IRAM 30 m telescope, complemented here with long-term optical polarimetric observations from multiple facilities. We aim to test whether current models of parsec-scale jet physics are consistent with observed multiband polarization behavior. Using a Bayesian framework, we derive intrinsic mean flux densities and modulation indices for total flux and fractional polarization, and characterize electric vector position angle (EVPA) variability using circular statistics. We then examine how these quantities reflecting variability properties across millimeter and optical bands relate to synchrotron peak frequency, jet orientation, and radio/gamma-ray luminosities. BL Lacertae (BL Lac) objects exhibit, on average, higher fractional polarization and lower EVPA variability than flat-spectrum radio quasars (FSRQs) at all wavelengths. Fractional polarization increases with frequency, consistent with increasingly ordered magnetic fields at shorter wavelengths. BL Lacs also show more frequent alignment of EVPAs between optical and millimeter bands, whereas FSRQs display weaker coherence. EVPA variability correlates positively with radio and gamma-ray luminosities and negatively with synchrotron peak frequency, most strongly in the optical. We further find a positive correlation between EVPA spread and fractional polarization variability, suggesting a direct link between magnetic-field structure and polarization dynamics.

AB - Millimeter-band polarimetry offers a powerful probe of active galactic nuclei jets, accessing regions less affected by opacity and Faraday rotation than at longer radio wavelengths. As part of the POLAMI program, we have conducted 14 yr of 1 and 3 mm polarization monitoring of a sample of gamma-ray-bright blazars with the IRAM 30 m telescope, complemented here with long-term optical polarimetric observations from multiple facilities. We aim to test whether current models of parsec-scale jet physics are consistent with observed multiband polarization behavior. Using a Bayesian framework, we derive intrinsic mean flux densities and modulation indices for total flux and fractional polarization, and characterize electric vector position angle (EVPA) variability using circular statistics. We then examine how these quantities reflecting variability properties across millimeter and optical bands relate to synchrotron peak frequency, jet orientation, and radio/gamma-ray luminosities. BL Lacertae (BL Lac) objects exhibit, on average, higher fractional polarization and lower EVPA variability than flat-spectrum radio quasars (FSRQs) at all wavelengths. Fractional polarization increases with frequency, consistent with increasingly ordered magnetic fields at shorter wavelengths. BL Lacs also show more frequent alignment of EVPAs between optical and millimeter bands, whereas FSRQs display weaker coherence. EVPA variability correlates positively with radio and gamma-ray luminosities and negatively with synchrotron peak frequency, most strongly in the optical. We further find a positive correlation between EVPA spread and fractional polarization variability, suggesting a direct link between magnetic-field structure and polarization dynamics.

UR - https://www.mendeley.com/catalogue/a30eb39f-64c4-3a88-8036-a285e6026857/

UR - https://www.scopus.com/pages/publications/105033967433

U2 - 10.3847/1538-4365/ae39c7

DO - 10.3847/1538-4365/ae39c7

M3 - Article

VL - 283

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

SN - 0067-0049

IS - 1

M1 - 13

ER -

ID: 149272306