Common Name: Mrk 421 MOJAVE 15 GHz [Total intensity movie]   | [Polariz. movie] VLBA 1.4 GHz: 2006ApJ...646..801G
B1950 Name: 1101+384 2 cm VLBA Image map
J2000 Name: J1104+3812
R.A. and Dec. (J2000): 11h4m27.314s
+38d12'31.799"
AGN Class: HSP BL Lac
Redshift: 0.0293 (2015ApJS..218...10V)
Luminosity Distance: 127 Mpc ; 0.58 pc/mas
Radio Spectrum: Flat
Gamma-ray Association LAT: Y, EGRET: Y, TeV: Y
Kpc-scale morphology: Core Halo
Jet Speed: Maximum: 106 ± 13 μas/y ; 0.208 ± 0.025 c
Median: N/A ;
based on 4 moving features
Lister et al. 2021, ApJ,923,30
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_04_05 |

Spectral Index 8-15 GHz Map: | 2006_04_05 |


Multifrequency MOJAVE VLBA Data:

Epoch
8.1 GHz
8.4 GHz
12.1 GHz
2006-04-05
uvf  FITS  PNG  PDF 
uvf  FITS  PNG  PDF 
uvf  FITS  PNG  PDF 

VLBA 23 GHz:
Kpc-scale: Giroletti et al. 2006, ApJ 646, 801
23 GHz Image
Kpc Image

Fermi LAT and 15 GHz VLBA Light Curves

Fermi LAT and 15 GHz VLBA Light Curves
VLBA 43 GHz: Jorstad et al. 2017
Multiepoch Radio Spectrum:
43 GHz Image
Radio Spectrum
Comments: LAT 1FM source; EGRET LAT20 TEV MOJAVE-2 source; called galaxy in NED, VLA image in AU85

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 team checks and adjusts the flux density scaling of the MOJAVE VLBA data for possible systematics based on near-simultaneous OVRO 40m measurements at 15 GHz. Asterisked entries below denote epochs that have not yet been checked and corrected.
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
2022-03-18 BL286AI 515 3.3 0.6 105 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-08-20 BL178BI 539 5.4 1.0 140 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-07-30 BL178BG 591 5.1 0.9 165 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-07-08 BL178BE 625 4.7 0.7 153 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-05-05 BL178BC 517 12 2.3 127 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-02-10 BL178AZ 541 4.9 0.9 109 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-01-21 BL178AY 575 9.8 1.7 118 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-12-10 BL178AV 502 8.4 1.7 169 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-11-16 BR175E 524 9.1 1.7 158 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-10-26 BR175C 523 14 2.8 173 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-10-19 BR175B 563 15 2.6 3 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-10-12 BR175A 586 16 2.7 15 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-04-29 BL178AJ 382 5.0 1.3 98 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-12-29 BL178AD 367 6.7 1.8 100 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-11-28 BG207K 334 1.3 0.4 97 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-09-28 BG207I 321 0.9 0.3 153 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-08-29 BG207H 333 no data FITS   PNG   PDF UVF PNG   PDF PNG
2011-07-24 BL149DN 302 3.3 1.1 51 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-11-29 BL149CY 350 6.5 1.8 110 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-10-15 BL149CS 315 9.2 2.9 62 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-07-12 BL149CL 333 6.0 1.8 77 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-02-11 BL149CH 354 2.7 0.8 119 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-12-17 BL149CE 314 4.6 1.5 137 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-06-25 BL149BO 323 6.0 1.9 96 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-05-02 BL149BK 330 1.5 0.4 49 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-04-22 BK150I 311 no data FITS   PNG   PDF UVF PNG   PDF PNG
2009-01-30 BL149BH 305 5.6 1.8 113 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-10-03 BL149BD 323 2.9 0.9 135 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-07-17 BL149AK 365 7.0 1.9 94 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-06-25 BL149AJ 355 6.6 1.9 67 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-05-01 BL149AO 353 3.1 0.9 61 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-09-06 BL149AG 398 9.9 2.5 103 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-06-15 BK135 344 no data FITS   PNG   PDF UVF PNG   PDF PNG
2007-06-03 BL149AA 367 5.4 1.5 85 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-02-05 BL137N 387 7.1 1.8 95 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2006-06-25 BC160 272 no data FITS   PNG   PDF UVF PNG   PDF PNG
2006-04-05 BL137C 329 6.3 1.9 93 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2001-03-04 BK068E 403 no data FITS   PNG   PDF UVF PNG   PDF PNG
1999-05-21 BK068A 445 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-04-26 BC077C 369 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-03-28 BC077B 354 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-03-19 BK052C 367 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-03-04 BC077A 412 no data FITS   PNG   PDF UVF PNG   PDF PNG
1997-08-28 BK052A 523 no data FITS   PNG   PDF UVF PNG   PDF PNG
1997-08-15 BM082C 527 9.7 1.8 54 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
1997-03-13 BK048B 566 no data FITS   PNG   PDF UVF PNG   PDF PNG
1996-05-16 BK037B 336 no data FITS   PNG   PDF UVF PNG   PDF PNG
1996-05-02 BE10B 360 no data FITS   PNG   PDF UVF PNG   PDF PNG
1996-04-23 BE10A 357 no data FITS   PNG   PDF UVF PNG   PDF PNG
1995-04-07 BK016 426 no data FITS   PNG   PDF UVF PNG   PDF PNG
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