Common Name: | 4C +56.27 | MOJAVE 15 GHz [Total intensity movie]   | [Polariz. movie] | VLBA 1.4 GHz: University College Cork Program |
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B1950 Name: | 1823+568 | ![]() |
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J2000 Name: | J1824+5651 | ||||||||||
R.A. and Dec. (J2000): | 18h24m7.068s +56d51'1.491" |
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AGN Class: | LSP BL Lac | ||||||||||
Redshift: | 0.664 (Lawrence et al. 1986, AJ 91, 494) | Luminosity Distance: | 3991 Mpc ; 6.99 pc/mas | ||||||||
Radio Spectrum: | Flat | ||||||||||
Gamma-ray Association | LAT: Y, EGRET: N, TeV: N | ||||||||||
Kpc-scale morphology: | One-sided Halo | ||||||||||
Jet Speed: | Maximum: 576 ± 48 μas/y ; 21.9 ± 1.8 c Median: 175 ± 17 μas/y ; 6.63 ± 0.65 c based on 11 moving feature 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: Method I:   Cumulative GIF, pol PNG, I FITS, P FITS, m FITS, EVPA FITS Method II:   std EVPA PNG, FITS Rotation Measure 8-15 GHz Map: | 2006_07_07 | Spectral Index 8-15 GHz Map: | 2006_07_07 | Multifrequency MOJAVE VLBA Data:
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VLBA 23 GHz: |
Kpc-scale: Kollgaard et al. 1992, AJ, 104,1687 | |||||||||
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Fermi LAT and 15 GHz VLBA Light Curves![]() |
VLBA 43 GHz: Cheng et al. 2018 |
Multiepoch Radio Spectrum: |
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Comments: | Listed by Veron-Cetty and Veron (2001) as QSO but is an intermediate BL/QSO; OBC88 have VLA images |
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 |
2012-03-27 | BL178AI | 1533 | 120 | 7.8 | 5 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2011-06-06 | BL149DJ | 1334 | 121 | 9.0 | 10 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2010-10-25 | BL149CT | 1234 | 103 | 8.4 | 17 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2010-02-11 | BL149CH | 1654 | 124 | 7.5 | 27 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2009-05-28 | BL149BL | 1581 | 128 | 8.1 | 21 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2008-11-26 | BL149BF | 1407 | 114 | 8.1 | 13 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2008-07-30 | BL149AL | 1405 | 104 | 7.4 | 24 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2008-05-01 | BL149AO | 1310 | 81 | 6.2 | 19 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2007-09-06 | BL149AG | 1032 | 79 | 7.6 | 30 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2007-06-10 | BL149AB | 998 | 59 | 5.9 | 26 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2007-03-02 | BL137O | 966 | 64 | 6.6 | 17 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2006-07-07 | BL137G | 1241 | 87 | 7.0 | 27 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2005-12-22 | BL123Q | 1247 | 84 | 6.8 | 22 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2005-09-23 | BL123O | 1398 | 98 | 7.0 | 11 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2005-05-26 | BL123G | 1704 | 145 | 8.5 | 14 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2004-10-18 | BL111P | 1447 | 103 | 7.1 | 23 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2004-05-29 | BG131C | 1525 | 92 | 6.0 | 24 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2004-04-12 | BG144B | 1547 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2004-03-28 | BC127F | 1646 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2003-10-27 | BM155C | 1604 | 62 | 3.9 | 25 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2003-10-17 | BC127D | 1596 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2003-08-23 | BG131B | 1491 | 109 | 7.3 | 26 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2003-08-19 | BC127C | 1427 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2003-05-09 | BL111H | 1572 | 125 | 7.9 | 24 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2003-02-20 | BG114C | 1541 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2002-12-29 | BC127B | 1442 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2002-12-13 | BG131A | 1420 | 141 | 10.0 | 26 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2002-10-22 | BC127A | 1423 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2002-08-07 | BG128A | 1374 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2002-08-02 | BR077M | 1309 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2001-08-18 | BG114B | 1402 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2001-08-06 | BM155A | 1442 | 82 | 5.7 | 16 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2001-05-19 | BG114A | 1371 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2001-03-04 | BK068E | 1260 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2000-06-27 | BT051 | 942 | 72 | 7.7 | 24 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2000-02-09 | BG096 | 1008 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1999-12-30 | BM108G | 1003 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1999-12-27 | BG095 | 975 | 79 | 8.1 | 34 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 1999-09-26 | BM108E | 983 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1999-09-19 | BP048D | 844 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1999-07-28 | BM108C | 930 | 74 | 7.9 | 27 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 1999-07-25 | BP048C | 824 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1999-05-21 | BK068A | 1022 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1998-11-01 | BK052E | 1222 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1998-05-15 | BA032A | 1333 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1998-04-26 | BC077C | 1348 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1998-03-28 | BC077B | 1313 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1998-03-04 | BC077A | 1302 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1997-08-28 | BK052A | 1864 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1997-08-10 | BM080 | 2032 | 188 | 9.2 | 14 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 1997-02-09 | BG063 | 1578 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1996-05-16 | BK037B | 2227 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1995-12-15 | BK37A | 2295 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1995-07-16 | BP021 | 1933 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1995-01-20 | BP14 | 1530 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1994-08-31 | BZ004 | 1311 | no data | FITS PNG PDF | UVF | PNG PDF | PNG |
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