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Quasar in the constellation of Virgo From Wikipedia, the free encyclopedia
PKS 1402+044 is a quasar located in the constellation of Virgo. It has a redshift of 3.207, estimating the object to be located 11.3 billion light-years away from Earth.[1][2]
PKS 1402+044 | |
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![]() PKS 1402+044 captured by DESI Legacy Surveys | |
Observation data (J2000.0 epoch) | |
Constellation | Virgo |
Right ascension | 14h 05m 01.12s |
Declination | +04d 15m 35.82s |
Redshift | 3.207977 |
Heliocentric radial velocity | 961,727 km/s |
Distance | 11.323 Gly (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 classified a broad absorption-line quasar (BAL QSO) observed by Sloan Digital Sky Survey[3] with a flat-spectrum radio source.[4][5] It is also classified a blazar, a type of active galaxy[6][7] and such produces a powerful astrophysical jet that is shot out into the depths of intergalactic space.[8] Observations made by the European VLBI network, finds the jet is weakly distorted and considered most distant in the universe's history.[9]
The blazar is known to be in its quiescent state, but it shows repeated periods of outbursts that are visible throughout the electromagnetic spectrum.[10] According to observations from Gamma-Ray Blazar Survey and Fermi Gamma-Ray Space Telescope, PKS 1402+044 is found optically variable with >6σ significance,[11] γ-ray detected and more Compton dominated than high synchrotron peaked (HSP) BL Lac objects.[12]
Through radio imaging by researchers, the quasar is core-dominated with fluctuating radio emission and radio morphology found smaller in comparison of steep-spectrum quasars.[13] It is also the brightest X-ray quasar but with compact dispersion of <logL χ1>=46.15±0.25 at high redshift.[14] The quasar is radio-loud with straightened jet magnetic fields along its source axis and a lobe field found to have a misaligned orientation.[15]
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