English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Revisiting LS I +61 303 with VLBI astrometry

Wu, Y. W., Torricelli-Ciamponi, G., Massi, M., Reid, M. J., Zhang, B., Shao, L., et al. (2018). Revisiting LS I +61 303 with VLBI astrometry. Monthly Notices of the Royal Astronomical Society: Letters, 474, 4245-4253. doi:10.1093/mnras/stx3003.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0000-ADF1-D Version Permalink: http://hdl.handle.net/21.11116/0000-0003-0229-D
Genre: Journal Article

Files

show Files
hide Files
:
1711.07598.pdf (Preprint), 741KB
Name:
1711.07598.pdf
Description:
File downloaded from arXiv at 2018-02-26 10:23
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
mnras474_4245.pdf (Publisher version), 2MB
 
File Permalink:
-
Name:
mnras474_4245.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Potsdam-Golm; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Wu, Y. W., Author
Torricelli-Ciamponi, G., Author
Massi, M., Author
Reid, M. J., Author
Zhang, B., Author
Shao, L.1, Author              
Zheng, X. W., Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

Content

show
hide
Free keywords: Astrophysics, Galaxy Astrophysics, astro-ph.GA, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Abstract: We conducted multi-epoch VLBA phase reference observations of LS I +61 303 in order to study its precessing radio jet. Compared to similar observations in 2006, we find that the observed elliptical trajectory of emission at 8.4 GHz repeats after the 9-year gap. The accurate alignment of the emission patterns yields a precession period of 26.926 +- 0.005 d, which is consistent with that determined by Lomb-Scargle analysis of the radio light curve. We analytically model the projection on the sky plane of the peak position of a precessing, synchrotron-emitting jet, which traces an elliptical trajectory on the sky. Comparing the simulation with the VLBA astrometry we improve our knowledge of the geometry of the system.We measure the LS I +61 303 absolute proper motion to be -0.150 +- 0.006 mas/yr eastward and -0.264 +- 0.006 mas/yr northward. Removing Galactic rotation, this reveals a small, < 20 km/s, non-circular motion, which indicates a very low kick velocity when the black hole was formed.

Details

show
hide
Language(s):
 Dates: 2017-11-202018
 Publication Status: Published in print
 Pages: 10 pages, 10 Figures, 1 Table, MNRAS accepted 2017 November 19
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1711.07598
DOI: 10.1093/mnras/stx3003
URI: http://arxiv.org/abs/1711.07598
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Monthly Notices of the Royal Astronomical Society: Letters
  Other : Mon. Not. Roy. Astron. Soc.: Letters
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Blackwell Science
Pages: - Volume / Issue: 474 Sequence Number: - Start / End Page: 4245 - 4253 Identifier: ISSN: 1745-3925
CoNE: /journals/resource/1000000000021470