English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Following the discovery of a new radio component right before the GeV\gamma-ray detection since 2008 August by Fermi Gamma-ray Space Telescope, wepresent a detailed study of the kinematics and lightcurve on the central sub-pcscale of 3C 84 using the archival VLBA 43-GHz data covering the period between2002 January to 2008 November. We find that the new component "C3", previouslyreported by the observations with the VLBI Exploration of Radio Astrometry(VERA), was already formed in 2003. The flux density of C3 increases moderatelyuntil 2008, and then it becomes brighter rapidly after 2008. The radio core,C1, also shows a similar trend. The apparent speed of C3 with reference to thecore C1 shows moderate acceleration from 0.10c to 0.47c between 2003 Novemberto 2008 November, but is still sub-relativistic. We further try to fit theobserved broadband spectrum by the one-zone synchrotron self-Compton (SSC)model using the measured apparent speed of C3. The fit can reproduce theobserved \gamma-ray emission, but does not agree with the observed radiospectral index between 22 and 43 GHz.

Exploring the central sub-pc region of the \gamma-ray bright radio galaxy 3C 84 with the VLBA at 43 GHz in the period of 2002-2008