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Space VLBI Observations of Southern EGRET Identifications

Space VLBI Observations of Southern EGRET Identifications. Kiyoaki WAJIMA (Korea Astronomy and Space Science Institute). 200 6 May 17 KASI-APCTP Joint Workshop. Gamma-Ray Loud AGNs. Nearly 70 gamma-ray emitted AGN identified by EGRET (Hartman et al. 1999, ApJS, 123, 79)

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Space VLBI Observations of Southern EGRET Identifications

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  1. Space VLBI Observations ofSouthern EGRET Identifications Kiyoaki WAJIMA (Korea Astronomy and Space Science Institute) 2006 May 17 KASI-APCTP Joint Workshop

  2. Gamma-Ray Loud AGNs • Nearly 70 gamma-ray emitted AGN identified by EGRET (Hartman et al. 1999, ApJS, 123, 79) • Coincidence between epochs ofgamma-ray flare and emergenceof a new jet component (Jorstadet al. 2001, ApJ, 556, 738) • Milliarcsecond (mas)-scale properties • Relation between gamma-ray/radio emission and emergence of a new jet component New jet component Local gamma-ray flare 2006 May 17 KASI-APCTP WS

  3. Observations and Results • Space VLBI observations • HALCA spacecraft and 3 ~ 12 groundradio telescopes at 1.6 and 5 GHz Figure: Space VLBI imagesof each source (cf. Wajimaet al. 2000, 2006) Three of six sources havea brightness temperaturegreater than 1012 K. 2006 May 17 KASI-APCTP WS

  4. Discussion • Relation between gamma-ray/radio flare and emergence of a new jet component 2006 May 17 KASI-APCTP WS

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