Common Name: | 4C +20.24 | VLBA 2cm Image [Total intensity movie]   | | VLBA 1.4 GHz: |
B1950 Name: | 1055+201 | ||
J2000 Name: | J1058+1951 | ||
R.A. and Dec. (J2000): | 10h58m17.901s +19d51'50.870" |
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AGN Class: | LSP Quasar | ||
Redshift: | 1.115 (2010AJ....139.2360S) | Luminosity Distance: | 7602 Mpc ; 8.24 pc/mas |
Radio Spectrum: | Flat | ||
Gamma-ray Association | LAT: N, EGRET: N, TeV: N | ||
Kpc-scale morphology: | Two-sided | ||
Jet Speed: | Maximum: 130 ± 16 μas/y ; 7.37 ± 0.88 c Median: N/A ; based on 3 moving features Lister et al. 2019, ApJ,874,43 |
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Separation Versus Time Plot: | PNG PDF | ||
Stacked 15 GHz Stokes I VLBA images: Natural weight:   PNG PDF FITS Circular Beam:   PNG PDF FITS Tapered Beam:   PNG PDF FITS Stacking for 1994-2015:   FITS Stacked 15 GHz Polarization VLBA images: Rotation Measure 8-15 GHz Map: | Not available | Spectral Index 8-15 GHz Map: | Not available | |
VLBA 23 GHz: |
Kpc-scale: Murphy, Browne and Perley 1993, MNRAS, 264, 298 | |
Fermi LAT and 15 GHz VLBA Light Curves |
VLBA 43 GHz: |
Multiepoch Radio Spectrum: |
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Comments: | HR92 spectrum shows flattening at high frequencies |
Epoch (YYYY-MM-DD) | VLBA Code | VLBA I (mJy) |
VLBA P (mJy) |
VLBA P (%) |
VLBA EVPA (deg.) |
I Image (Nat. Weight) | Visibility Data |
Stokes I Radplot | Polarization Image |
Full Montage |
2001-11-07 | BR077C | 343 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1999-11-06 | BK068C | 377 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1998-10-30 | BK052D | 335 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1998-03-19 | BK052C | 307 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1997-08-28 | BK052A | 246 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1996-05-16 | BK037B | 306 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1995-12-15 | BK37A | 313 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1995-04-07 | BK016 | 329 | no data | FITS PNG PDF | UVF | PNG PDF | PNG |
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