A precessing and nutating jet in OJ287

Silke Britzen; C. Fendt; G. Witzel; S. J. Qian; I. N. Pashchenko; O. Kurtanidze; M. Zajacek; G. Martinez; V. Karas; M. Aller; H. Aller; A. Eckart; K. Nilsson; P. Arévalo; J. Cuadra; M. Subroweit; A. Witzel

doi:10.1017/S1743921318008049

A precessing and nutating jet in OJ287

Silke Britzen
, C. Fendt
, G. Witzel
, S. J. Qian
, I. N. Pashchenko
, O. Kurtanidze
, M. Zajacek
, G. Martinez
, V. Karas
, M. Aller
, H. Aller
, A. Eckart
, K. Nilsson
, P. Arévalo
, J. Cuadra
, M. Subroweit
, A. Witzel

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

We re-analyzed OJ287 in 120 Very Long Baseline Array (VLBA, MOJAVE) observations (at 15 GHz) covering the time span between Apr. 1995 and Apr. 2017. We find that the radio jet motion over the sky is consistent with a precessing and nutating jet source. The variability of the radio flux-density can be explained by Doppler beaming due to a change in the viewing angle. We suggest that part of the optical emission is due to synchrotron emission related to the jet radiation. We find a strikingly similar scaling for the timescales for precession and nutation as indicated for SS433 with a factor of roughly 50 times longer in OJ287.

Original language	English
Pages (from-to)	250-251
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	14
Issue number	342
DOIs	https://doi.org/10.1017/S1743921318008049
State	Published - 2020
Externally published	Yes
Event	342nd Symposium of the International Astronomical on Perseus in Sicily: From Black Hole to Cluster Outskirts - Noto, Italy Duration: 14 May 2018 → 18 May 2018

Keywords

BL Lacertae objects: individual (OJ 287)
galaxies: jets
techniques: interferometric

Access to Document

10.1017/S1743921318008049

Cite this

Britzen, S., Fendt, C., Witzel, G., Qian, S. J., Pashchenko, I. N., Kurtanidze, O., Zajacek, M., Martinez, G., Karas, V., Aller, M., Aller, H., Eckart, A., Nilsson, K., Arévalo, P., Cuadra, J., Subroweit, M., & Witzel, A. (2020). A precessing and nutating jet in OJ287. Proceedings of the International Astronomical Union, 14(342), 250-251. https://doi.org/10.1017/S1743921318008049

@article{0d8ab92a3973421b819314d59162cdb7,

title = "A precessing and nutating jet in OJ287",

abstract = "We re-analyzed OJ287 in 120 Very Long Baseline Array (VLBA, MOJAVE) observations (at 15 GHz) covering the time span between Apr. 1995 and Apr. 2017. We find that the radio jet motion over the sky is consistent with a precessing and nutating jet source. The variability of the radio flux-density can be explained by Doppler beaming due to a change in the viewing angle. We suggest that part of the optical emission is due to synchrotron emission related to the jet radiation. We find a strikingly similar scaling for the timescales for precession and nutation as indicated for SS433 with a factor of roughly 50 times longer in OJ287.",

keywords = "BL Lacertae objects: individual (OJ 287), galaxies: jets, techniques: interferometric",

author = "Silke Britzen and C. Fendt and G. Witzel and Qian, \{S. J.\} and Pashchenko, \{I. N.\} and O. Kurtanidze and M. Zajacek and G. Martinez and V. Karas and M. Aller and H. Aller and A. Eckart and K. Nilsson and P. Ar{\'e}valo and J. Cuadra and M. Subroweit and A. Witzel",

note = "Publisher Copyright: {\textcopyright} International Astronomical Union 2020.; 342nd Symposium of the International Astronomical on Perseus in Sicily: From Black Hole to Cluster Outskirts ; Conference date: 14-05-2018 Through 18-05-2018",

year = "2020",

doi = "10.1017/S1743921318008049",

language = "English",

volume = "14",

pages = "250--251",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

number = "342",

}

Britzen, S, Fendt, C, Witzel, G, Qian, SJ, Pashchenko, IN, Kurtanidze, O, Zajacek, M, Martinez, G, Karas, V, Aller, M, Aller, H, Eckart, A, Nilsson, K, Arévalo, P, Cuadra, J, Subroweit, M & Witzel, A 2020, 'A precessing and nutating jet in OJ287', Proceedings of the International Astronomical Union, vol. 14, no. 342, pp. 250-251. https://doi.org/10.1017/S1743921318008049

TY - JOUR

T1 - A precessing and nutating jet in OJ287

AU - Britzen, Silke

AU - Fendt, C.

AU - Witzel, G.

AU - Qian, S. J.

AU - Pashchenko, I. N.

AU - Kurtanidze, O.

AU - Zajacek, M.

AU - Martinez, G.

AU - Karas, V.

AU - Aller, M.

AU - Aller, H.

AU - Eckart, A.

AU - Nilsson, K.

AU - Arévalo, P.

AU - Cuadra, J.

AU - Subroweit, M.

AU - Witzel, A.

PY - 2020

Y1 - 2020

N2 - We re-analyzed OJ287 in 120 Very Long Baseline Array (VLBA, MOJAVE) observations (at 15 GHz) covering the time span between Apr. 1995 and Apr. 2017. We find that the radio jet motion over the sky is consistent with a precessing and nutating jet source. The variability of the radio flux-density can be explained by Doppler beaming due to a change in the viewing angle. We suggest that part of the optical emission is due to synchrotron emission related to the jet radiation. We find a strikingly similar scaling for the timescales for precession and nutation as indicated for SS433 with a factor of roughly 50 times longer in OJ287.

AB - We re-analyzed OJ287 in 120 Very Long Baseline Array (VLBA, MOJAVE) observations (at 15 GHz) covering the time span between Apr. 1995 and Apr. 2017. We find that the radio jet motion over the sky is consistent with a precessing and nutating jet source. The variability of the radio flux-density can be explained by Doppler beaming due to a change in the viewing angle. We suggest that part of the optical emission is due to synchrotron emission related to the jet radiation. We find a strikingly similar scaling for the timescales for precession and nutation as indicated for SS433 with a factor of roughly 50 times longer in OJ287.

KW - BL Lacertae objects: individual (OJ 287)

KW - galaxies: jets

KW - techniques: interferometric

UR - https://www.scopus.com/pages/publications/85083422319

U2 - 10.1017/S1743921318008049

DO - 10.1017/S1743921318008049

M3 - Conference article

AN - SCOPUS:85083422319

SN - 1743-9213

VL - 14

SP - 250

EP - 251

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - 342

T2 - 342nd Symposium of the International Astronomical on Perseus in Sicily: From Black Hole to Cluster Outskirts

Y2 - 14 May 2018 through 18 May 2018

ER -

A precessing and nutating jet in OJ287

Abstract

Keywords

Access to Document

Fingerprint

Cite this