PKS 0637-752 explained

PKS 0637-752
Epoch:J2000.0
Constellation Name:Mensa
Z:0.653000
H Radial V:195,765 km/s
Dist Ly:6.0 Gly
Appmag V:0.34
Appmag B:0.26
Type:FRSQ, Blazar
Notes:X-ray jet
Names:IRAS F06374-7513, PGC 2824867, MRC 0637-752, 2E 1720, OCARS 0637-752

PKS 0637-752 is a quasar located six billion light years in the constellation of Mensa.[1] It is noted for having a bright and largest astrophysical jet at redshift of z = 0.651.[2] [3] Discovered by Einstein Observatory in 1980 through X-rays,[4] PKS 0637-752 was the first celestial object to be observed by Chandra X-ray Observatory upon its commissioning in July 23, 1999.[5]

Characteristics

PKS 0637-752 contains an active galactic nucleus. It is classified a blazar, a type of an active galaxy with a relativistic jet pointing towards Earth's direction.[6] [7] Like other quasars, PKS 0637-752 is considered luminous, powering up 10 trillion times the sun, with a supermassive black hole in its center.[8] [9]

X-ray jet

PKS 0637-752 contains a high γ-ray flux[10] X-ray jet[11] [12] studied by Hubble Space Telescope[13] and Spitzer.[14] The jet extends ≥100 kiloparsecs wide and has a luminosity of ~1044.6 ergs-1. It produces X-ray emission through inverse Compton scattering from the cosmic microwave background.[15]

Further observations from Hubble also found three small knots occurring concurrently with the X-ray emission and peak radio. According to observations made by Australia Telescope Compact Array, these knots are shown to be quasi-periodic with a separation gap of ~1.1 arcsecs. Using two class models, astronomers calculated the jet power of PKS 0637-752 to be Q ~ 1046 erg/s and the jet engine modulation to be 2 x 103 yr < \tau < 3x 105 yr. Such evidence, proves the jet structure in the quasar might result from an unstable accretion disk, causing limit cycle behavior.[16]

References

  1. Web site: NED Search Results for PKS 0637-752 . 2024-09-04 . ned.ipac.caltech.edu.
  2. Schwartz . D. A. . Marshall . H. L. . Lovell . J. E. J. . Piner . B. G. . Tingay . S. J. . Birkinshaw . M. . Chartas . G. . Elvis . M. . Feigelson . E. D. . Ghosh . K. K. . Harris . D. E. . Hirabayashi . H. . Hooper . E. J. . Jauncey . D. L. . Lanzetta . K. M. . 2000-09-10 . [ITAL]Chandra[/ITAL] Discovery of a 100 kiloparsec X-Ray Jet in PKS 0637−752 ]. The Astrophysical Journal . 540 . 2 . L69–L72 . 10.1086/312875 . 0004-637X.
  3. VSOP and ATCA Observations of PKS 0637-752 . 2024-09-04 . Astrophysical Phenomena Revealed by Space Vlbi. 2000aprs.conf..215L . Lovell . J. E. J. . Tingay . S. J. . Piner . B. G. . Jauncey . D. L. . Preston . R. A. . Murphy . D. W. . McCulloch . P. M. . Costa . M. E. . Nicolson . G. . Hirabayashi . H. . Reynolds . J. E. . Tzioumis . A. K. . Jones . D. L. . Lister . M. L. . Meier . D. L. . Birkinshaw . M. . Chartas . G. . Feigleson . E. D. . Garmire . G. P. . Ghosh . K. K. . Marshall . H. L. . Mathur . S. . Sambruna . R. M. . Schwartz . D. A. . Tucker . W. H. . Wilkes . B. . Worrall . D. M. . 2000 . 215 .
  4. Elvis . M. . Fabbiano . G. . 1984-05-01 . X-ray and UV observations of two radio-bright quasars. . The Astrophysical Journal . 280 . 91–97 . 10.1086/161970 . 1984ApJ...280...91E . 0004-637X.
  5. Chartas . G. . Worrall . D. M. . Birkinshaw . M. . Cresitello-Dittmar . M. . Cui . W. . Ghosh . K. K. . Harris . D. E. . Hooper . E. J. . Jauncey . D. L. . Kim . D.-W. . Lovell . J. . Mathur . S. . Schwartz . D. A. . Tingay . S. J. . Virani . S. N. . 2000-10-20 . TheChandra X-Ray ObservatoryResolves the X-Ray Morphology and Spectra of a Jet in PKS 0637−752 . The Astrophysical Journal . 542 . 2 . 655–666 . 10.1086/317049 . 0004-637X.
  6. Podjed . Stephanie A. . Hickox . Ryan C. . Isler . Jedidah C. . Böttcher . Markus . Schutte . Hester M. . 2024-06-01 . Optical Spectropolarimetric Variability Properties in Blazars PKS 0637–75 and PKS 1510–089 . The Astrophysical Journal . 968 . 2 . 130 . 10.3847/1538-4357/ad4111 . free . 0004-637X. 2406.17687 .
  7. Ghisellini . G. . Tavecchio . F. . Foschini . L. . Ghirlanda . G. . Maraschi . L. . Celotti . A. . 2009-11-26 . General physical properties of bright Fermi blazars . Monthly Notices of the Royal Astronomical Society . 402 . 1 . 497–518 . 10.1111/j.1365-2966.2009.15898.x . free . 0035-8711. 0909.0932 .
  8. Web site: Chandra Press Room :: Fact Sheet: PKS 0637-752 . 2024-09-04 . chandra.si.edu.
  9. Web site: October 23, 2012 . Distant Quasar Ejects 2 Million Light-Year Long Jet of Cosmic Material . SciTechDaily.
  10. Lucchini . M. . Tavecchio . F. . Ghisellini . G. . 2016-12-22 . Revisiting the EC/CMB model for extragalactic large scale jets . Monthly Notices of the Royal Astronomical Society . stw3316 . 10.1093/mnras/stw3316 . free . 0035-8711. 1610.01580 .
  11. Bhattacharyya . Wrijupan . Gupta . Nayantara . 2016-02-01 . Proton Synchrotron Radiation from Extended Jets of PKS 0637-752 and 3C 273 . The Astrophysical Journal . 817 . 2 . 121 . 10.3847/0004-637X/817/2/121 . free . 1511.00258 . 2016ApJ...817..121B . 0004-637X.
  12. Edwards . Philip G. . Piner . B. Glenn . Tingay . Steven J. . Lovell . James E. J. . Kataoka . Jun . Ojha . Roopesh . Murata . Yasuhiro . 2006-04-01 . The Parsec-Scale Jet of PKS 0637-752 . Publications of the Astronomical Society of Japan . 58 . 233–241 . 10.1093/pasj/58.2.233 . 2006PASJ...58..233E . 0004-6264.
  13. Mehta . Kushal T. . Georganopoulos . Markos . Perlman . Eric S. . Padgett . Charles A. . Chartas . George . 2009-01-01 . HST observations of the quasar PKS 0637-752: equipartition electron-proton jet from the most complete spectral coverage to date . The Astrophysical Journal . 690 . 2 . 1706–1714 . 10.1088/0004-637X/690/2/1706 . 0809.1608 . 0004-637X.
  14. Uchiyama . Yasunobu . Urry . C. Megan . Van Duyne . Jeffrey . Cheung . C. C. . Sambruna . Rita M. . Takahashi . Tadayuki . Tavecchio . Fabrizio . Maraschi . Laura . 2005-09-14 . Spitzer IRAC Imaging of the Relativistic Jet from Superluminal Quasar PKS 0637-752 . The Astrophysical Journal . 631 . 2 . L113–L116 . 10.1086/497426 . 0004-637X.
  15. Tavecchio . Fabrizio . Maraschi . Laura . Sambruna . Rita M. . Urry . C. Megan . 2000-11-20 . The X-Ray Jet of PKS 0637−752: Inverse Compton Radiation from the Cosmic Microwave Background? . The Astrophysical Journal . 544 . 1 . L23–L26 . 10.1086/317292 . 0004-637X. astro-ph/0007441 .
  16. Kusunose . Masaaki . Takahara . Fumio . 2017-01-16 . A Photo-Hadronic Model of the Large-Scale Jet of PKS 0637-752 . The Astrophysical Journal . 835 . 1 . 20 . 10.3847/1538-4357/835/1/20 . free . 0004-637X. 1611.08046 .

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