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Discovery of the preferred direction of electric vector position angle rotations in blazars. / Shishkina, E. V.; Savchenko, S. S.; Morozova, D. A.; Jorstad, S. G.; Blinov, D. A.; Borman, George A.; Grishina, T. S.; Kopatskaya, E. N.; Larionova, E. G.; Novikova, P. A.; Shkodkina, E. A.; Smith, P. S.; Troitskiy, I. S.; Troitskaya, Yu. V.; Vasilyev, A. A.; Zhovtan, Alexey V.

In: ASTRONOMY & ASTROPHYSICS, Vol. 691, L18, 21.11.2024.

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

Harvard

Shishkina, EV, Savchenko, SS, Morozova, DA, Jorstad, SG, Blinov, DA, Borman, GA, Grishina, TS, Kopatskaya, EN, Larionova, EG, Novikova, PA, Shkodkina, EA, Smith, PS, Troitskiy, IS, Troitskaya, YV, Vasilyev, AA & Zhovtan, AV 2024, 'Discovery of the preferred direction of electric vector position angle rotations in blazars', ASTRONOMY & ASTROPHYSICS, vol. 691, L18. https://doi.org/10.1051/0004-6361/202451867, https://doi.org/10.1051/0004-6361/202451867

APA

Shishkina, E. V., Savchenko, S. S., Morozova, D. A., Jorstad, S. G., Blinov, D. A., Borman, G. A., Grishina, T. S., Kopatskaya, E. N., Larionova, E. G., Novikova, P. A., Shkodkina, E. A., Smith, P. S., Troitskiy, I. S., Troitskaya, Y. V., Vasilyev, A. A., & Zhovtan, A. V. (2024). Discovery of the preferred direction of electric vector position angle rotations in blazars. ASTRONOMY & ASTROPHYSICS, 691, [L18]. https://doi.org/10.1051/0004-6361/202451867, https://doi.org/10.1051/0004-6361/202451867

Vancouver

Shishkina EV, Savchenko SS, Morozova DA, Jorstad SG, Blinov DA, Borman GA et al. Discovery of the preferred direction of electric vector position angle rotations in blazars. ASTRONOMY & ASTROPHYSICS. 2024 Nov 21;691. L18. https://doi.org/10.1051/0004-6361/202451867, https://doi.org/10.1051/0004-6361/202451867

Author

Shishkina, E. V. ; Savchenko, S. S. ; Morozova, D. A. ; Jorstad, S. G. ; Blinov, D. A. ; Borman, George A. ; Grishina, T. S. ; Kopatskaya, E. N. ; Larionova, E. G. ; Novikova, P. A. ; Shkodkina, E. A. ; Smith, P. S. ; Troitskiy, I. S. ; Troitskaya, Yu. V. ; Vasilyev, A. A. ; Zhovtan, Alexey V. / Discovery of the preferred direction of electric vector position angle rotations in blazars. In: ASTRONOMY & ASTROPHYSICS. 2024 ; Vol. 691.

BibTeX

@article{efd0ec7e2a384e3e9f542a256a4bbf56,
title = "Discovery of the preferred direction of electric vector position angle rotations in blazars",
abstract = "Blazars are a subclass of active galactic nuclei (AGNs) with a high optical linear polarization that originates in relativistic jets. Polarization parameters such as the degree of polarization (PD) and the electric vector position angle (EVPA) are directly related to the properties of the magnetic field in the jets. A study of the optical polarization of blazars allows conclusions to be drawn about the field geometry, its evolution, and its relation to the emission properties of the blazars. The periods of ordered changes in the electric vector position angle, so-called rotations, are of particular interest. We used a new method to determine EVPA rotations and to estimate their statistical significance with the aim to analyze long-term polarimetric observations of five blazars: OJ 287, S5 0716+71, 3C 454.3, CTA 102, and PG 1553+113. This resultes in the identification of 256 EVPA rotations. We found possible tendencies for the EVPA rotations to occur in a preferred direction in each of these sources: clockwise for OJ 287 and CTA 102, and counterclockwise for the others. The EVPA rotations can be explained by the spiral structure of the magnetic field in the jet. In this case, the observed preferred direction of rotations reflects the global structure of the magnetic field, which can be associated with the direction of rotation of either the black hole ergosphere or the accretion disk.",
keywords = "BL Lacertae objects: general, Galaxies: active, Galaxies: jets, Galaxies: nuclei, Quasars: general",
author = "Shishkina, {E. V.} and Savchenko, {S. S.} and Morozova, {D. A.} and Jorstad, {S. G.} and Blinov, {D. A.} and Borman, {George A.} and Grishina, {T. S.} and Kopatskaya, {E. N.} and Larionova, {E. G.} and Novikova, {P. A.} and Shkodkina, {E. A.} and Smith, {P. S.} and Troitskiy, {I. S.} and Troitskaya, {Yu. V.} and Vasilyev, {A. A.} and Zhovtan, {Alexey V.}",
year = "2024",
month = nov,
day = "21",
doi = "10.1051/0004-6361/202451867",
language = "English",
volume = "691",
journal = "ASTRONOMY & ASTROPHYSICS",
issn = "0004-6361",
publisher = "EDP Sciences",

}

RIS

TY - JOUR

T1 - Discovery of the preferred direction of electric vector position angle rotations in blazars

AU - Shishkina, E. V.

AU - Savchenko, S. S.

AU - Morozova, D. A.

AU - Jorstad, S. G.

AU - Blinov, D. A.

AU - Borman, George A.

AU - Grishina, T. S.

AU - Kopatskaya, E. N.

AU - Larionova, E. G.

AU - Novikova, P. A.

AU - Shkodkina, E. A.

AU - Smith, P. S.

AU - Troitskiy, I. S.

AU - Troitskaya, Yu. V.

AU - Vasilyev, A. A.

AU - Zhovtan, Alexey V.

PY - 2024/11/21

Y1 - 2024/11/21

N2 - Blazars are a subclass of active galactic nuclei (AGNs) with a high optical linear polarization that originates in relativistic jets. Polarization parameters such as the degree of polarization (PD) and the electric vector position angle (EVPA) are directly related to the properties of the magnetic field in the jets. A study of the optical polarization of blazars allows conclusions to be drawn about the field geometry, its evolution, and its relation to the emission properties of the blazars. The periods of ordered changes in the electric vector position angle, so-called rotations, are of particular interest. We used a new method to determine EVPA rotations and to estimate their statistical significance with the aim to analyze long-term polarimetric observations of five blazars: OJ 287, S5 0716+71, 3C 454.3, CTA 102, and PG 1553+113. This resultes in the identification of 256 EVPA rotations. We found possible tendencies for the EVPA rotations to occur in a preferred direction in each of these sources: clockwise for OJ 287 and CTA 102, and counterclockwise for the others. The EVPA rotations can be explained by the spiral structure of the magnetic field in the jet. In this case, the observed preferred direction of rotations reflects the global structure of the magnetic field, which can be associated with the direction of rotation of either the black hole ergosphere or the accretion disk.

AB - Blazars are a subclass of active galactic nuclei (AGNs) with a high optical linear polarization that originates in relativistic jets. Polarization parameters such as the degree of polarization (PD) and the electric vector position angle (EVPA) are directly related to the properties of the magnetic field in the jets. A study of the optical polarization of blazars allows conclusions to be drawn about the field geometry, its evolution, and its relation to the emission properties of the blazars. The periods of ordered changes in the electric vector position angle, so-called rotations, are of particular interest. We used a new method to determine EVPA rotations and to estimate their statistical significance with the aim to analyze long-term polarimetric observations of five blazars: OJ 287, S5 0716+71, 3C 454.3, CTA 102, and PG 1553+113. This resultes in the identification of 256 EVPA rotations. We found possible tendencies for the EVPA rotations to occur in a preferred direction in each of these sources: clockwise for OJ 287 and CTA 102, and counterclockwise for the others. The EVPA rotations can be explained by the spiral structure of the magnetic field in the jet. In this case, the observed preferred direction of rotations reflects the global structure of the magnetic field, which can be associated with the direction of rotation of either the black hole ergosphere or the accretion disk.

KW - BL Lacertae objects: general

KW - Galaxies: active

KW - Galaxies: jets

KW - Galaxies: nuclei

KW - Quasars: general

UR - https://www.mendeley.com/catalogue/36751a95-ec4f-3f41-8078-9776243d70d0/

U2 - 10.1051/0004-6361/202451867

DO - 10.1051/0004-6361/202451867

M3 - Article

VL - 691

JO - ASTRONOMY & ASTROPHYSICS

JF - ASTRONOMY & ASTROPHYSICS

SN - 0004-6361

M1 - L18

ER -

ID: 126937580