Quasar in the constellation of Virgo
PKS 1402+044 Observation data (J2000.0 epoch ) Constellation Virgo Right ascension 14h 05m 01.12s Declination +04d 15m 35.82s Redshift 3.207977 Heliocentric radial velocity 961,727km/s Distance 11.323Gly (light travel time distance) Apparent magnitude (V)0.074 Apparent magnitude (B)0.098 Surface brightness 19.6 Characteristics Type FSRQ; BAL, BLLAC Other designations NVSS J140501+041536,FIRST J140501.1+041535,PGC 2827828, TXS 1402+044,IRCF J140501.1+041535, ZS 1402+043,MRC 1402+044, PMN J1405+0415,SDSS J140501.12+041535.7
PKS 1402+044 is aquasar located in the constellation ofVirgo . It has aredshift of 3.207, estimating the object to be located 11.3 billionlight-years away fromEarth .[ 1] [ 2]
PKS 1402+044 is classified as a broadabsorption-line quasar (BAL QSO) observed bySloan Digital Sky Survey [ 3] with a flat-spectrumradio source .[ 4] [ 5] It is also classified ablazar , a type ofactive galaxy [ 6] [ 7] and such produces a powerfulastrophysical jet that is shot out into the depths ofintergalactic space .[ 8]
The blazar is known to be in its quiescent state, but it shows repeated periods of outbursts that are visible throughout theelectromagnetic spectrum .[ 9] According to observations from Gamma-Ray Blazar Survey andFermi Gamma-Ray Space Telescope , PKS 1402+044 is found optically variable with >6σ significance,[ 10] γ-ray detected and moreCompton dominated than highsynchrotron peaked (HSP)BL Lac objects .[ 11]
Throughradio imaging by researchers, the quasar is core-dominated with fluctuatingradio emission and radio morphology found smaller in comparison of steep-spectrum quasars.[ 12] The quasar is radio-loud with straightened jetmagnetic fields along its source axis and a lobe field found to have a misaligned orientation.[ 13]
^ "Your NED Search Results" .ned.ipac.caltech.edu . Retrieved2024-06-13 .^ Peterson, B. A.; Jauncey, D. L.; Wright, A. E.; Condon, J. J. (1978-06-01)."PKS 1402+44: a red object with a redshift of 3.20" .The Astrophysical Journal .222 :L81 – L83 .Bibcode :1978ApJ...222L..81P .doi :10.1086/182697 .ISSN 0004-637X . ^ Gibson, Robert R.; Jiang, Linhua; Brandt, W. N.; Hall, Patrick B.; Shen, Yue; Wu, Jianfeng; Anderson, Scott F.; Schneider, Donald P.; Vanden Berk, Daniel; Gallagher, S. C.; Fan, Xiaohui; York, Donald G. (2009-02-01)."A Catalog of Broad Absorption Line Quasars in Sloan Digital Sky Survey Data Release 5" .The Astrophysical Journal .692 (1):758– 777.arXiv :0810.2747 .Bibcode :2009ApJ...692..758G .doi :10.1088/0004-637X/692/1/758 .ISSN 0004-637X . ^ Healey, Stephen E.; Romani, Roger W.; Taylor, Gregory B.; Sadler, Elaine M.; Ricci, Roberto; Murphy, Tara; Ulvestad, James S.; Winn, Joshua N. (2007-07-01)."CRATES: An All-Sky Survey of Flat-Spectrum Radio Sources" .The Astrophysical Journal Supplement Series .171 (1):61– 71.arXiv :astro-ph/0702346 .Bibcode :2007ApJS..171...61H .doi :10.1086/513742 .ISSN 0067-0049 . ^ Siebert, J.; Brinkmann, W.; Drinkwater, M. J.; Yuan, W.; Francis, P. J.; Peterson, B. A.; Webster, R. L. (1998-11-01)."X-ray properties of the Parkes sample of flat-spectrum radio sources: dust in radio-loud quasars?" .Monthly Notices of the Royal Astronomical Society .301 (1):261– 279.arXiv :astro-ph/9808065 .Bibcode :1998MNRAS.301..261S .doi :10.1046/j.1365-8711.1998.02019.x .ISSN 0035-8711 . ^ Massaro, E.; Giommi, P.; Leto, C.; Marchegiani, P.; Maselli, A.; Perri, M.; Piranomonte, S.; Sclavi, S. (2009-02-01)."Roma-BZCAT: a multifrequency catalogue of blazars" .Astronomy and Astrophysics .495 (2):691– 696.arXiv :0810.2206 .Bibcode :2009A&A...495..691M .doi :10.1051/0004-6361:200810161 .ISSN 0004-6361 . ^ Paliya, Vaidehi S.; Marcotulli, L.; Ajello, M.; Joshi, M.; Sahayanathan, S.; Rao, A. R.; Hartmann, D. (2017-12-01)."General Physical Properties of CGRaBS Blazars" .The Astrophysical Journal .851 (1): 33.arXiv :1711.01292 .Bibcode :2017ApJ...851...33P .doi :10.3847/1538-4357/aa98e1 .ISSN 0004-637X . ^ Liu, F. K.; Zhang, Y. H. (2002-01-01)."A new list of extra-galactic radio jets" .Astronomy and Astrophysics .381 (3):757– 760.arXiv :astro-ph/0212477 .Bibcode :2002A&A...381..757L .doi :10.1051/0004-6361:20011572 .ISSN 0004-6361 . ^ Liodakis, I.; Pavlidou, V.; Hovatta, T.; Max-Moerbeck, W.; Pearson, T. J.; Richards, J. L.; Readhead, A. C. S. (2017-06-01)."Bimodal radio variability in OVRO-40 m-monitored blazars" .Monthly Notices of the Royal Astronomical Society .467 (4):4565– 4576.arXiv :1702.05493 .Bibcode :2017MNRAS.467.4565L .doi :10.1093/mnras/stx432 .ISSN 0035-8711 . ^ Richards, J. L.; Hovatta, T.; Max-Moerbeck, W.; Pavlidou, V.; Pearson, T. J.; Readhead, A. C. S. (2014-03-01)."Connecting radio variability to the characteristics of gamma-ray blazars" .Monthly Notices of the Royal Astronomical Society .438 (4):3058– 3069.arXiv :1312.3634 .Bibcode :2014MNRAS.438.3058R .doi :10.1093/mnras/stt2412 .ISSN 0035-8711 . ^ Hovatta, T.; Pavlidou, V.; King, O. G.; Mahabal, A.; Sesar, B.; Dancikova, R.; Djorgovski, S. G.; Drake, A.; Laher, R.; Levitan, D.; Max-Moerbeck, W.; Ofek, E. O.; Pearson, T. J.; Prince, T. A.; Readhead, A. C. S. (2014-03-01)."Connection between optical and γ-ray variability in blazars" .Monthly Notices of the Royal Astronomical Society .439 (1):690– 702.arXiv :1401.0538 .Bibcode :2014MNRAS.439..690H .doi :10.1093/mnras/stt2494 .ISSN 0035-8711 . ^ Barthel, Peter D.; Vestergaard, Marianne; Lonsdale, Colin J. (2000-02-01)."Radio imaging of core-dominated high redshift quasars" .Astronomy and Astrophysics .354 :7– 16.arXiv :astro-ph/9911474 .Bibcode :2000A&A...354....7B .ISSN 0004-6361 . ^ Feigelson, E. D.; Isobe, T.; Kembhavi, A. (1984-10-01)."Radio and X-ray emission in radio-selected quasars" .The Astronomical Journal .89 :1464– 1477.Bibcode :1984AJ.....89.1464F .doi :10.1086/113648 .ISSN 0004-6256 .