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.)
Stokes I Image
(Nat. weight)
Visibility
Data
Stokes I Radplot Polarization Image
(Nat. weight)
Full
Montage
2022-03-18 BL286AI 518 4.0 0.8 116 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-08-20 BL178BI 549 6.4 1.2 142 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-07-30 BL178BG 599 2.7 0.4 161 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-07-08 BL178BE 629 3.6 0.6 136 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-05-05 BL178BC 522 12 2.3 125 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-02-10 BL178AZ 548 6.4 1.2 107 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-01-21 BL178AY 580 11 1.8 114 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-12-10 BL178AV 507 7.2 1.4 170 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-11-16 BR175E 524 10 1.9 157 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-10-26 BR175C 524 15 2.9 172 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-10-19 BR175B 566 15 2.6 0 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-10-12 BR175A 585 13 2.2 11 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-04-29 BL178AJ 391 5.3 1.3 85 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-12-29 BL178AD 375 5.1 1.3 95 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-11-28 BG207K 341 3.1 0.9 81 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-09-28 BG207I 325 1.7 0.5 24 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-08-29 BG207H 340 no data FITS   PNG   PDF UVF PNG   PDF PNG
2011-07-24 BL149DN 309 2.8 0.9 53 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-11-29 BL149CY 359 7.0 2.0 96 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-10-15 BL149CS 323 13 3.9 69 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-07-12 BL149CL 353 8.2 2.3 74 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-02-11 BL149CH 363 4.8 1.3 114 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-12-17 BL149CE 318 4.9 1.5 117 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-06-25 BL149BO 333 5.7 1.7 97 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-05-02 BL149BK 338 < 0.6 < 1.8 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-04-22 BK150I 316 no data FITS   PNG   PDF UVF PNG   PDF PNG
2009-01-30 BL149BH 310 5.2 1.7 112 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-10-03 BL149BD 328 2.8 0.9 136 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-07-17 BL149AK 374 7.1 1.9 85 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-06-25 BL149AJ 366 9.9 2.7 73 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-05-01 BL149AO 361 5.8 1.6 56 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-09-06 BL149AG 412 12 2.8 98 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-06-15 BK135 348 no data FITS   PNG   PDF UVF PNG   PDF PNG
2007-06-03 BL149AA 391 6.0 1.5 81 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-02-05 BL137N 394 9.5 2.4 87 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2006-06-25 BC160 279 no data FITS   PNG   PDF UVF PNG   PDF PNG
2006-04-05 BL137C 344 6.0 1.8 94 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2001-03-04 BK068E 412 no data FITS   PNG   PDF UVF PNG   PDF PNG
1999-05-21 BK068A 456 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-04-26 BC077C 383 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-03-28 BC077B 364 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-03-19 BK052C 372 no data FITS   PNG   PDF UVF PNG   PDF PNG
1998-03-04 BC077A 425 no data FITS   PNG   PDF UVF PNG   PDF PNG
1997-08-28 BK052A 525 no data FITS   PNG   PDF UVF PNG   PDF PNG
1997-08-15 BM082C 538 11 2.1 60 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
1997-03-13 BK048B 576 no data FITS   PNG   PDF UVF PNG   PDF PNG
1996-05-16 BK037B 341 no data FITS   PNG   PDF UVF PNG   PDF PNG
1996-05-02 BE10B 414 no data FITS   PNG   PDF UVF PNG   PDF PNG
1996-04-23 BE10A 376 no data FITS   PNG   PDF UVF PNG   PDF PNG
1995-04-07 BK016 437 no data FITS   PNG   PDF UVF PNG   PDF PNG
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