VS11U Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Kaj Wiik
Date Prepared: 06-10-2005
 

Summary
 
Observation code : VS11U    AIPS Version : 31DEC05   
Date of Observation : 1999/261    Difmap Version : 2.3c 
Source Name : J0626+8202    vsop_difmap used : Yes 
Calibration Source(s) : J1048+71, J0217+73         
Ground telescopes : EB, JB, MC, ON, SH, WB  Model Fitted to data : Yes 
Tracking Station(s) : RZ, NZ    Image made : Yes 
Correlator : Socorro         

 
Abstract
GOT extraction from v085g. J0626+8202 is a z=0.71 GPS source, VLBA 2cm survey gives a comment that "This source does not have a simple linear morphology". The simplest solution is a somewhat extended multicomponent source but this does not fit to the closure phases well. Only this core-jet plus arc gives nearly perfect closure phase fit. Unfortunately some of stations have clearly fluctuating amplitudes, so gscale was used.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.304405 0.0361727 -172.352 0.282213 1.00000 -22.0335 0.1865
0.176896 0.517328 -174.551 0.871240 1.00000 0.00000 0.0114
0.154903 0.605908 -57.5332 0.831726 1.00000 26.8340 0.0109
0.0632655 1.01024 -128.583 0.394355 1.00000 -7.20794 0.0199
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


AIPS Data Reduction Notes
 
Task
Adverbs
CL
in
SN
in
CL
out
SN
out
Comments
FITLD clint = 0.5
digicor = 1
delcorr = -1
 
 
 
 
  
INDXR cparm = 0, 0, 0.25;
 
 
1 
 
  
ANTAB infile='v085g.antab'
 
 
 
 
  
APCAL
 
 
 
7 
  
ACCOR solint 5
 
 
 
6 
  
CLCAL refant=1;
4 
7 
5 
 
 Amplitude calibration solutions applied. EB as ref 
CLCOR
 
 
 
 
  
FRING docal -1; dparm 3,500,500,0,1,0;aparm(7)=0.5;solint
   3
1 
1 
 
 
 Full range searched 
CLCAL refant=1;
1 
2 
3 
 
 SN1 edited & smoothed -> SN3 
FRING dparm 3,50,50,0,0;aparm(7)=0.5;solint
   5
2 
 
 
4 
 Final fitting SNEDT SN4 -> SN5 
CLCAL refant=1;
4 
7 
5 
 
  
SPLIT aparm(1)=2 0;
5 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap amplitude 

AIPS Input Files
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_ACCOR_AMP_1.PS
SN_ACCOR_AMP_2.PS
SN_APCAL_AMP_1.PS
SN_APCAL_AMP_2.PS		 SN_FRING01_DEL_1.PS
SN_FRING01_DEL_2.PS
SN_FRING01_RAT_1.PS
SN_FRING01_RAT_2.PS
SN_FRING01_SNR_1.PS
SN_FRING01_SNR_2.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.PS
VPLOT_AP_2.PS
POSSM.PS
POSSM01_AP_2.PS
POSSM02_AP_2.PS


Difmap Data Reduction Notes
Phase selfcal applied? Yes
Global amplitude selfcal (gscal) applied? Yes
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? Yes
Image Made and saved? Yes
Comments on Difmap processing

Image
Ampl, Phase vs (u,v) Distance
PS (175 kb)
JPEG (55 kb)
 Ampl, Phase vs Time
PS (456 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (90 kb)
JPEG (39 kb)
Closure Phase vs Time
PS (530 kb)
JPEG 1, 2, 3		 Clean Image
PS (36 kb)
JPEG (47 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (175 kb)
JPEG (54 kb)
 Ampl, Phase vs Time
PS (455 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (90 kb)
JPEG (39 kb)
Closure Phase vs Time
PS (530 kb)
JPEG 1, 2, 3		 Image with model components
PS (36 kb)
JPEG (39 kb)

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

Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.304405 0.0361727 -172.352 0.282213 1.00000 -22.0335 0.1865
0.176896 0.517328 -174.551 0.871240 1.00000 0.00000 0.0114
0.154903 0.605908 -57.5332 0.831726 1.00000 26.8340 0.0109
0.0632655 1.01024 -128.583 0.394355 1.00000 -7.20794 0.0199
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri May 5 07:07:48 UTC 2006
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