2004AJ....127.3115J

Query : 2004AJ....127.3115J

2004AJ....127.3115J - Astron. J., 127, 3115-3120 (2004/June-0)

Change in speed and direction of the jet near the core in the quasar 3C 279.

JORSTAD S.G., MARSCHER A.P., LISTER M.L., STIRLING A.M., CAWTHORNE T.V., GOMEZ J.-L. and GEAR W.K.

Abstract (from CDS):

Intensive monitoring of the innermost jet in the quasar 3C 279 at 43 GHz from 1998 March to 2001 April with the Very Long Baseline Array, in combination with previous observations, reveal (1) an increase in apparent speed from 5c to 17c and (2) a change in projected direction of the jet by ∼20°. These effects could result from a small increase in the intrinsic viewing angle of the jet nozzle from Θ≲0°.5 to Θ≲1°.6, with no increase required in the actual speed of the flow, which corresponds to a Lorentz factor γ≳20. The Lorentz factor ∼20 and viewing angle ∼0°.5 imply that the Doppler factor is at least 39 close to the core; this extreme value explains the high flux density and rapid variability of 3C 279 across the electromagnetic spectrum.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Jets - Galaxies: Quasars: Individual: Alphanumeric: 3C 279

Nomenclature: Table 2: [DP83] 3C 279 ANN (Nos C10-C16) added.

Simbad objects: 15

goto Full paper

goto View the references in ADS

Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 QSO J0854+2006 BLL 08 54 48.8749846272 +20 06 30.639583620   15.91 15.43 15.56   ~ 2332 1
2 3C 279C5 Rad 12 56 11.0 -05 47 21           ~ 10 0
3 3C 279C6 Rad 12 56 11.0 -05 47 21           ~ 9 0
4 3C 279C7 Rad 12 56 11.0 -05 47 21           ~ 11 0
5 3C 279C8 Rad 12 56 11.0 -05 47 21           ~ 10 0
6 3C 279C9 Rad 12 56 11.0 -05 47 21           ~ 7 0
7 3C 279C7 a Rad 12 56 11.0 -05 47 21           ~ 7 0
8 3C 279C10 Rad 12 56 11.0 -05 47 21           ~ 4 0
9 3C 279C11 Rad 12 56 11.0 -05 47 21           ~ 3 0
10 3C 279C12 Rad 12 56 11.0 -05 47 21           ~ 4 0
11 3C 279C13 Rad 12 56 11.0 -05 47 21           ~ 3 0
12 3C 279C14 Rad 12 56 11.0 -05 47 21           ~ 3 0
13 3C 279C4 Rad 12 56 11.0 -05 47 21           ~ 24 0
14 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3045 2
15 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1119 2

To bookmark this query, right click on this link: simbad:objects in 2004AJ....127.3115J and select 'bookmark this link' or equivalent in the popup menu