Common Name: TXS 0831+557 MOJAVE 15 GHz   | VLBA 1.4 GHz: NRAO Archive
B1950 Name: 0831+557 2 cm VLBA Image map
J2000 Name: J0834+5534
R.A. and Dec. (J2000): 8h34m54.904s
+55d34'21.070"
AGN Class: NLSY1
Redshift: 0.241536 (2020ApJS..249....3A)
Luminosity Distance: 1201 Mpc ; 3.78 pc/mas
Radio Spectrum: Steep
Gamma-ray Association LAT: N, EGRET: N, TeV: N
Kpc-scale morphology: Two-sided
Jet Speed: Maximum: Unknown ;
Median: Unknown ;
Separation Versus Time Plot: Not available   
Stacked epoch 15 GHz VLBA images:
Uniform weight: Not Available  
Natural weight: Not Available  
Circular Beam : Not Available  
Tapered Beam: Not Available  

Rotation Measure Map: | Not available |

Spectral Index Map: | Not available |


VLBA 23 GHz:
Kpc-scale: Caltech-Jodrell Flat-Spectrum Survey
23 GHz Image
Kpc Image

Fermi LAT and 15 GHz VLBA Light Curves

Fermi LAT and 15 GHz VLBA Light Curves
VLBA 43 GHz:
Multiepoch Radio Spectrum:
43 GHz Image
Radio Spectrum
Comments: NLSY1 from Rakshit 2017; dropped from MOJAVE since too resolved

If you use these data in a publication, we ask that you please contact us so we can add a link to the list of external MOJAVE publications, and ask that you cite Lister et al., 2018, ApJS, 234, 12 and include the following acknowledgment: "This research has made use of data from the MOJAVE database that is maintained by the MOJAVE team (Lister et al. 2018)"

Important Note: The MOJAVE team, working with the OVRO 40m AGN monitoring group, discovered a systematic error in the flux densities of all VLBA 15 GHz observations taking place after a date that lies between 2019 April 16 and 2019 May 16. Observations after that date have correlated flux densities that are between 10% and 20% too low. We have adjusted the flux density scaling of the MOJAVE VLBA data up to 2022 Jan 3 based on near-simultaneous OVRO 40m measurements at 15 GHz.

Asterisked entries below denote epochs that have not yet been corrected for the VLBA flux density scaling problem.
Epoch
(Y-M-D)
VLBA Code VLBA I
(mJy)
VLBA P
(mJy)
VLBA
P (%)
VLBA
EVPA (deg.)
I Image (Nat. Weight) Tapered I Image Tapered I Image (Widefield) Visibility
Data
Stokes I Radplot Pol.
Image
2002-06-15 BL111B 1025 < 3.5 < 3.4 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
1999-01-02 BG077D 797 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
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