Summary
 

Observation code	:	VS07t		AIPS Version	:	31DEC99
Date of Observation	:	1999/222		Difmap Version	:	2.3c
Source Name	:	J0115-01		vsop_difmap used	:	Yes
Calibration Source(s)	:	0202+149
Ground telescopes	:	MP, HO, SH		Model Fitted to data	:	Yes
Tracking Station(s)	:	GZ, TZ, RZ		Image made	:	Yes
Correlator	:	Penticton

 

Abstract Found fringes to HALCA throughout the experiment using standard parameters in FRING. There was a delay jump of 200-300 nsec between the TZ and GZ tracking pass. Imaging this source was rather difficult. After cleaning the central region there was still considerable flux missing from the short baselines and a number of nearly equally bright residuals. Windowed the two brightest residuals, which also happen to be in the jet direction seen in the USNO image (if the northwest component is the core). Also did several iterations with natural weighting to more closely approach the short baseline flux. A 3-component circular model was fit to the data. The total flux density was only about 0.5 Jy, compared to 0.9 Jy from the AT light curve.

Model
Flux (Jy)	Radius (mas)	Theta (deg)	Major (mas)	Axial ratio	Phi (deg)	TB (10^12 K)
0.142087	2.03093	-51.8755	0.309970	1.00000	-50.1945	0.0722
0.170054	1.04001	-51.4475	0.464767	1.00000	-42.7094	0.0384
0.155938	0.214537	-19.6007	0.141646	1.00000	-47.2906	0.3793
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.

AIPS Input Files

INDXR.TXT ANTAB.TXT

Comments - None -

AIPS Output Files

PRTAN.LIS LISTR.LIS DTSUM_0.LIS DTSUM_1.LIS UVPLT_UV.PS UVPLT_UVD.PS UVPLT_UVPA.PS SN_APCAL_AMP_2.PS

SN_APCAL_AMP_1.PS SN_CALIB_DEL_1.PS SN_CALIB_DEL_2.PS SN_CALIB_RAT_1.PS SN_CALIB_RAT_2.PS SN_CALIB_SNR_1.PS SN_CALIB_SNR_2.PS SN_CALIB_PHA_1.PS

SN_CALIB_PHA_2.PS VPLOT_AP_1.PS VPLOT_AP_2.PS POSSM01_AP_1.PS POSSM02_AP_1.PS POSSM03_AP_1.PS

More details on the Images and Modelfits are found in this page.