PKS 0637-752

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PKS 0637-752
PKS 0637-752- NASA Unveils First Images From Chandra X-Ray Observatory (1999-0064 - 0064 xray).tiff
Chandra X-ray Observatory image of PKS 0637-752
Observation data (J2000.0 epoch)
Constellation Mensa
Right ascension 06h 35m 46.5s
Declination −75° 16′ 16.8″
Redshift 0.653000
Heliocentric radial velocity 195,765 km/s
Distance 6.0 Gly
Apparent magnitude  (V)0.34
Apparent magnitude  (B)0.26
Characteristics
Type FRSQ, Blazar
Notable featuresX-ray jet
Other designations
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]

Contents

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. [2] 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]

Related Research Articles

The Parkes Catalogue of Radio Sources, also known as the Parkes Southern Radio Source Catalog, consists of 8264 astronomical radio sources, mostly south of declination +27. The catalogue was mostly compiled by John Bolton and his colleagues for 20 years. Both the Molonglo 408-MHz survey and the 80-MHz Culgoora measurements of Slee et al have contributed to the usefulness of the catalogue. For now, the catalogue only contains sources originally found in the Parkes 2700-MHz survey. The catalogue contains radio sources that have a frequency range of 80 - 22,000 MHz.

<span class="mw-page-title-main">4C +29.30</span> Galaxy in the constellation Cancer

4C +29.30 is an elliptical galaxy located in Cancer constellation. Its redshift is 0.064840 which corresponds to a light travel time of 850 million light-years from Earth. It is a wide-angled tailed radio galaxy (WAT) and a Seyfert galaxy.

<span class="mw-page-title-main">PKS 0537-286</span> Quasar in the constellation Columba

PKS 0537-286, also known as QSO B0537-286, is a quasar located in the constellation Columba. With a redshift of 3.104, the object is located 11.4 billion light years away and belongs to the flat spectrum radio quasar blazar subclass (FSQR). It is one of the most luminous known high-redshift quasars.

<span class="mw-page-title-main">PKS 0438-436</span> Quasar in the constellation Caelum

PKS 0438-436, also known as PKS J0440-4333, is a quasar located in constellation Caelum. With a high redshift of 2.86, the object is located 11.2 billion light-years from Earth and is classified as a blazar due to its flat-spectrum radio source, (in terms of the flux density as with α < 0.5 and its optical polarization.

<span class="mw-page-title-main">PKS 2126-158</span> Quasar in the constellation Capricornus

PKS 2126-158, also known as PKS 2126-15, is a quasar located in Capricornus. It has a redshift of 3.268000, which corresponds to the distance of 11.5 billion light years. It is classified as a gigahertz peaked-spectrum quasar (GPS) with a flat-spectrum radio source and a blazar, a type of active galaxy shooting an astrophysical jet towards Earth.

<span class="mw-page-title-main">PKS 0451-28</span> Quasar in the constellation Caelum

PKS 0451-28, also known as MRC 0451-282, is a quasar located in the constellation of Caelum. Its redshift is 2.55, estimating the object to be located nearly 10.8 billion light-years away from Earth.

<span class="mw-page-title-main">PKS 1144-379</span> Quasar in the constellation Centaurus

PKS 1144-379 also known as PKS B1144-379, is a quasar located in the constellation of Centaurus. At the redshift of 1.048, the object is located nearly 8 billion light-years from Earth.

<span class="mw-page-title-main">PKS 1402+044</span> Quasar in the constellation of Virgo

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.

<span class="mw-page-title-main">PKS 0805-07</span> Quasar in the constellation of Monoceros

PKS 0805-07 also known as PMN J0808-0751 and 4FGL J0808.2-0751, is a quasar located in the constellation of Monoceros. With a redshift of 1.83, light has taken at least 10 billion light-years to reach Earth.

<span class="mw-page-title-main">NRAO 530</span> Flat spectrum radio quasar in the constellation Serpens

NRAO 530 or PKS 1730-13 is a flat-spectrum radio quasar located in the southern constellation of Serpens. It has a redshift of 0.902. and was first discovered by two astronomers, W.J. Welch and Hyron Spinrad in 1973. It is classified as a blazar because of its optical variability across the electromagnetic spectrum in radio, gamma ray and X-ray bands. This quasar is also further categorized an OVV quasar.

<span class="mw-page-title-main">PKS 0208-512</span> Blazar in the constellation Eridanus

PKS 0208-512 is a blazar located in the southern constellation of Eridanus. It has a redshift of 1.003 and was first discovered in 1975 by astronomers conducting the Parkes 2700 MHz survey in Australia as a bright astronomical radio source. This object is also classified highly polarized with the radio spectrum appearing to be flat, thus making it a flat-spectrum radio quasar.

<span class="mw-page-title-main">PKS 1424-418</span> Blazar in the constellation Centaurus

PKS 1424-418 is a blazar located in the constellation of Centaurus. It has a redshift of 1.522 and was first discovered in 1971 by astronomer Keith Peter Tritton who identified the object as ultraviolet-excessive. This object is also highly polarized with a compact radio source. The radio spectrum of this source appears flat, making it a flat-spectrum radio quasar.

<span class="mw-page-title-main">PKS 0537-441</span> Blazar in the constellation Pictor

PKS 0537-441 is a blazar located in the constellation of Pictor. It has a redshift of 0.896 and was discovered in 1973 by an American astronomer named Olin J. Eggen, who noted it as a luminous quasar. This is a BL Lacertae object in literature because of its featureless optical spectra as well as both a possible gravitational microlensing and a gravitationally lensed candidate. Its radio source is found compact and is characterized by a spectral peak in the gigahertz range, making it a gigahertz-peaked spectrum source (GPS).

<span class="mw-page-title-main">PKS 1622-297</span> Blazar in the constellation of Scorpius

PKS 1622-297 is a blazar located in the constellation of Scorpius. It is one of the brightest objects of its type in the gamma ray region. It has a redshift of (z) 0.815. This blazar was first discovered as a compact astronomical radio source in 1970 by astronomers who were conducting interferometer observations and identified with an optical counterpart in 1984. In addition, the radio spectrum of the source appears flat, making it a flat-spectrum radio quasar (FRSQ).

<span class="mw-page-title-main">PKS 0458-020</span> Quasar in the constellation Orion

PKS 0458-020 also known as PKS 0458-02, is a quasar located in the constellation of Orion. It has a redshift of (z) 2.286 and was first identified as an astronomical radio source during the radio survey conducted by Parkes Observatory in 1966. Subsequently the source was shown to display optical behavior before being classfied as a blazar via an optical polarimetry study in 1985. This source also shows radio spectrum appearing to be flat, hence making it a flat-spectrum radio quasar (FRSQ).

<span class="mw-page-title-main">PKS 1510-089</span> Blazar in the constellation Libra

PKS 1510-089 is a blazar located in the constellation of Libra, categorized as a highly polarized quasar showing fast variations in polarization angles, with a redshift of (z) 0.361. It was first discovered in 1966 as an astronomical radio source during the Parkes Observatory survey in 1966. The radio spectrum of the source appears flat, thus making it a flat-spectrum radio quasar (FRSQ).

<span class="mw-page-title-main">S5 2007+777</span> BL Lacertae object in the constellation Draco

S5 2007+777 is a classical BL Lacertae object located in the constellation of Draco. This object has a redshift of (z) 0.342 and was first discovered in 1981 as a flat-spectrum astronomical radio source. It has characteristics of different Fanaroff-Riley classes on both sides of its active nucleus making it a rare type of Hybrid morphology radio sources (HYMORs). It has an estimated V magnitude of 16.5.

<span class="mw-page-title-main">PKS 2255-282</span> Blazar in the constellation Piscis Austrinus

PKS 2255-282 is a blazar located in the constellation of Piscis Austrinus. This is a low-polarized quasar at the redshift of 0.926, first discovered in 1975 by astronomers via a spectroscopic observation. The radio spectrum of this source appears as flat, making it as a flat-spectrum quasar but also a Gigahertz Peaked Spectrum source (GPS) with turnover frequency between 22 and 37 GHz.

<span class="mw-page-title-main">PKS 1127-145</span> Quasar in the constellation Crater

PKS 1127-145 is a radio-loud quasar located in the constellation of Crater. This is a Gigahertz Peaked Spectrum object with a redshift of (z) 1.187, first discovered by astronomers in 1966. Its radio spectrum appears to be flat making it a flat-spectrum radio quasar, or an FRSQ in short.

<span class="mw-page-title-main">PKS 0528+134</span> Blazar in the constellation Orion

PKS 0528+134 is a distant blazar located in the Galactic anticenter towards the constellation of Orion. This is a compact radio quasar, classified as radio-loud with a redshift of (z) 2.07 yet having low polarization. It was first discovered in 1977 by astronomers as a radio source and contains a radio spectrum that appears as flat making it a flat-spectrum radio quasar. It has an optical brightness of 19.5.

References

  1. ↑ "NED Search Results for PKS 0637-752". ned.ipac.caltech.edu. Retrieved 2024-09-04.
  2. 1 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. doi:10.1086/312875. ISSN   0004-637X.
  3. ↑ 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). "VSOP and ATCA Observations of PKS 0637-752". Astrophysical Phenomena Revealed by Space Vlbi: 215. Bibcode:2000aprs.conf..215L . Retrieved 2024-09-04.
  4. ↑ Elvis, M.; Fabbiano, G. (1984-05-01). "X-ray and UV observations of two radio-bright quasars". The Astrophysical Journal. 280: 91–97. Bibcode:1984ApJ...280...91E. doi:10.1086/161970. ISSN   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. doi:10.1086/317049. ISSN   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. arXiv: 2406.17687 . doi: 10.3847/1538-4357/ad4111 . ISSN   0004-637X.
  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. arXiv: 0909.0932 . doi: 10.1111/j.1365-2966.2009.15898.x . ISSN   0035-8711.
  8. ↑ "Chandra Press Room :: Fact Sheet: PKS 0637-752". chandra.si.edu. Retrieved 2024-09-04.
  9. ↑ "Distant Quasar Ejects 2 Million Light-Year Long Jet of Cosmic Material". SciTechDaily. October 23, 2012.
  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. arXiv: 1610.01580 . doi: 10.1093/mnras/stw3316 . ISSN   0035-8711.
  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. arXiv: 1511.00258 . Bibcode:2016ApJ...817..121B. doi: 10.3847/0004-637X/817/2/121 . ISSN   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. Bibcode:2006PASJ...58..233E. doi:10.1093/pasj/58.2.233. ISSN   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. arXiv: 0809.1608 . doi:10.1088/0004-637X/690/2/1706. ISSN   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. doi:10.1086/497426. ISSN   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. arXiv: astro-ph/0007441 . doi:10.1086/317292. ISSN   0004-637X.
  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. arXiv: 1611.08046 . doi: 10.3847/1538-4357/835/1/20 . ISSN   0004-637X.
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