VLA calibrator information for 0402-3147

This page summarizes the information for 0402-3147 as found in the original VLA calibrator list and, if found there, a link to search the NRAO VLA Archive Survey (NVAS) for calibrator data before 2010. Furthermore, a table with the most recent approximate flux densities, starting from 2017 as mined from the VLA CASA pipeline is presented.

If shown at the top, we have recovered the original, pre-WIDAR ANTSOL flux density solutions from the period roughly 2000-2007; symbols as explained next.
The mined data are plotted (gray, on the left hand side) as function of (log) frequency on the top and as function of time on the bottom. The frequency band symbols in the bottom panel follow the symbols as outlined in the top panel:

4-band  (~75 MHz) horizontal stripe       X-band (~10.0 GHz) cross
P-band (~350 MHz) open triangle        U/Ku-band (~15.0 GHz) filled square
L-band (~1.5 GHz) VLA-Y shape             K-band (~22.2 GHz) open circle
S-band (~3.0 GHz) filled triangle      A/Ka-band (~33.2 GHz) 6-pointed star
C-band (~6.0 GHz) open square             Q-band (~45.0 GHz) filled circle
Assume a 10% flux density error on each point, up to 30% for the higher frequency data points. The dashed lines in the frequency plot indicate the approximate spectral index in the frequency band (tied to the measured flux density).
Depending on the spectral behavior, different receiver observing bands (as indicated with the log-frequency axis) may have very different typical flux densities. Note that there can be significant flux density changes for different array configurations, which start date is indicated at the top of the time-line figure. Calendar years are separated by vertical dotted lines.
If shown, a curve depicts a fit to the (unweighted) average data for each band (if there are more than two bands with measured flux densities). The fit equation is listed at the top where the x-coordinate represents the base-10 log of the frequency (GHz) and the y-coordinate represents the base-10 log of the flux density (mJy/bm). The fit may use more data than shown and is using data with different time stamps, which means typically different flux densitities in a single band for genuine variable sources (and/or observed in different array configurations).
Depending on the variability of the source, array configuration and the quality of the data, this fit may, or may not, be representative for the data!

(Click on the figure for a larger view in a new tab/window)

 Original (outdated) VLA calibrator list information: 
 IAU NAME EQUINOX  PC RA(hh,mm,ss)    DEC(ddd,mm,ss)   POS.REF ALT.NAME
 ===================================================================
 0402-317   J2000  A 04h02m21.266027s -31d47'25.945580"  Aug01         
 0400-319   B1950  A 04h00m23.601400s -31d55'41.945000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P S X       0.70            6
   6cm    C  P P S S       0.82
 3.7cm    X  P P P P       0.65
   2cm    U  S S S S       0.40
 0.7cm    Q  W W W W       0.53

Default NVAS search around this position (in new tab/window)

Results from CASA pipeline flux density mining:
Observing date (UT)Flux density (Jy/bm)Source name used
L-band data ("VLA Y-arm" symbols)
202207090.830J0402-3147
S-band data (filled triangles)
201802060.501J0402-3147
201802200.498J0402-3147
201805060.493J0402-3147
201805070.518J0402-3147
201805080.511J0402-3147
201805130.536J0402-3147
201805140.522J0402-3147
201901190.495J0402-3147
201902030.496J0402-3147
201902270.476J0402-3147
201904060.442J0402-3147
201907210.474J0402-3147
201908060.471J0402-3147
201908090.466J0402-3147
201908170.491J0402-3147
201908180.470J0402-3147
201908200.496J0402-3147
201908220.459J0402-3147
201908230.461J0402-3147
201908240.456J0402-3147
201908250.456J0402-3147
201908260.449J0402-3147
201908270.455J0402-3147
201908290.466J0402-3147
201908300.459J0402-3147
201908310.461J0402-3147
201909010.470J0402-3147
201909020.477J0402-3147
201909030.491J0402-3147
201909090.471J0402-3147
201909120.455J0402-3147
201909130.433J0402-3147
201909140.448J0402-3147
201909150.459J0402-3147
201909160.467J0402-3147
201909240.468J0402-3147
201909290.481J0402-3147
201910060.498J0402-3147
202109030.768J0402-3147
202109070.789J0402-3147
C-band data (open squares)
201901150.517J0402-3147
201901190.494J0402-3147
201902030.479J0402-3147
201902270.435J0402-3147
201904060.418J0402-3147
201907210.519J0402-3147
201910060.637J0402-3147
X-band data (X-crosses)
201802130.656J0402-3147