Very Large Array and Very Long Baseline Array Observations of the Highest Redshift Radio-Loud QSO J1427+3312 at Z = 6.12

Details Very Large Array and Very Long Baseline Array Observations of the Highest Redshift Radio-Loud QSO J1427+3312 at Z = 6.12 Very Large Array and Very Long Baseline Array Observations of the Highest Redshift Radio-Loud QSO J1427+3312 at Z = 6.12

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aj....136..344m&link_type=abstract

The Astronomical Journal, Volume 136, Issue 1, pp. 344-349 (2008).

Astronomy and Astrophysics

Astronomy

7

Galaxies: Active, Galaxies: High-Redshift, Galaxies: Individual: J1427+3312, Radio Continuum: Galaxies, Techniques: Interferometric

Scientific paper

We present 8.4 GHz Very Large Array (VLA) A configuration and 1.4 GHz Very Long Baseline Array (VLBA) results on the radio continuum emission from the highest redshift radio-loud quasar known to date, the z = 6.12 QSO J1427+3312. The VLA observations show an unresolved steep spectrum source with a flux density of 250 ± 20 μJy at 8.4 GHz and a spectral index value of α8.4 1.4 = -1.1. The 1.4 GHz VLBA images reveal several continuum components with a total flux density of 1.778 ± 0.109 mJy, which is consistent with the flux density measured with the VLA at 1.4 GHz. Each of these components is resolved with sizes of a few milliarcseconds, and intrinsic brightness temperatures on the order of 107 to 108 K. The physical characteristics as revealed in these observations suggest that this quasi-stellar object may be a Compact Symmetric Object (CSO), with the two dominant components seen with the VLBA, which are separated by 31 mas (174 pc) and have intrinsic sizes of ~22-34 pc, being the two radio lobes that are confined by the dense interstellar medium. If indeed a CSO, then the estimated kinematic age of this radio source is only 103 yr.

Affiliated with

Also associated with

No associations

Rating

Very Large Array and Very Long Baseline Array Observations of the Highest Redshift Radio-Loud QSO J1427+3312 at Z = 6.12 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Very Large Array and Very Long Baseline Array Observations of the Highest Redshift Radio-Loud QSO J1427+3312 at Z = 6.12, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very Large Array and Very Long Baseline Array Observations of the Highest Redshift Radio-Loud QSO J1427+3312 at Z = 6.12 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1137954