Radio jet precession in M 81*

被引：15

作者：

von Fellenberg, S. D. ^{[1
]}

Janssen, M. ^{[1
]}

Davelaar, J. ^{[3
,4
,5
]}

Zajacek, M. ^{[6
]}

Britzen, S. ^{[1
]}

Falcke, H. ^{[2
]}

Koerding, E. ^{[2
]}

Ros, E. ^{[1
]}

机构：

[1] Max Planck Inst Radio Astron, Hugel 69, D-53121 Bonn, Germany

[2] Radboud Univ Nijmegen, Inst Math Astrophys & Particle Phys IMAPP, Dept Astrophys, POB 9010, NL-6500 GL Nijmegen, Netherlands

[3] Columbia Univ, Dept Astron, 550 120th St, New York, NY 10027 USA

[4] Columbia Univ, Columbia Astrophys Lab, 550 120th St, New York, NY 10027 USA

[5] Flatiron Inst, Ctr Computat Astrophys, 162 Fifth Ave, New York, NY 10010 USA

[6] Masaryk Univ, Fac Sci, Dept Theoret Phys & Astrophys, Kotlarska 2, Brno 61137, Czech Republic

来源：

ASTRONOMY & ASTROPHYSICS | 2023年 / 672卷

基金：

欧盟地平线“2020”; 欧洲研究理事会;

关键词：

galaxies:; jets; X-RAY; BLACK-HOLE; RELATIVISTIC JETS; ACTIVE NUCLEUS; VLBI; ACCRETION; DISCOVERY; CORE; M81; MODELS;

D O I：

10.1051/0004-6361/202245506

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report four novel position angle measurements of the core region M 81* at 5 GHz and 8 GHz, which confirm the presence of sinusoidal jet precession in the M 81 jet region, as suggested by Marti-Vidal et al. (2011, A&A, 533, A111). The model makes three testable predictions regarding the evolution of the jet precession, which we test in our data with observations from 2017, 2018, and 2019. Our data confirm a precession period of similar to 7 yr on top of a small linear drift. We further show that two 8 GHz observation are consistent with a precession period of similar to 7 yr but show a different time lag with respect to the 5 GHz and 1.7 GHz observations. We do not find a periodic modulation of the light curve with the jet precession and therefore rule out a Doppler nature for the historic 1998-2002 flare. Our observations are consistent with either a binary black hole origin for the precession or the Lense-Thirring effect.

引用

页数：10

共 50 条

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