Astronomy:B3 0309+411B

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B3 0309+411
Sloan Digital Sky Survey image of radio galaxy B3 0309+411B.
Observation data (J2000.0 epoch)
ConstellationPerseus
Right ascension 03h 13m 01.96s[1]
Declination+41° 20′ 01.18″[1]
Redshift0.134000[1]
Helio radial velocity40,172 km/s[1]
Distance1.632 Gly
Apparent magnitude (B)18.0
Characteristics
TypeRadio galaxy Sy1[1]
Size~212,000 ly (65.01 kpc) (estimated)[1]
Other designations
2MASX J03130194+4120012, LEDA 3096766, NVSS J031301+412002, 22W 003, OCARS 0309+411, TXS 0309+411, 0309+411, 2MASS J03130196+4120012[1]

B3 0309+411B is a radio galaxy located in the constellation of Perseus. It has a redshift of (z) 0.134[1] and it was first discovered by astronomers in 1989 who classified it as an 18 magnitude galaxy with a quasar spectrum. It displays broad emission lines making it a broad-line radio galaxy (BLRG) and is located on the outskirts of the Perseus Cluster.[2][3]

Description

B3 0309+411B is classified as a giant radio galaxy with angular size of 1.8 megaparsecs.[4][3] When imaged, it is dominated by a central radio core, straddled by two radio lobes which are extended by 9.5 arcseconds.[3] Very Large Array (VLA) and Very Long Baseline Interferometry (VLBI) also found there is a weak jet-like extension.[5][6] Imaging by Giant Metrewave Radio Telescope revealed the galaxy has a radio jet which curves and extends by 250 kiloparsecs before bending in an abrupt way, reaching a northern hotspot region.[7] New imaging at 43 GHz by Very Long Baseline Array (VLBA) revealed a straight jet instead, aligning with a brighter kiloparsec-jet.[8]

The core of B3 0309+411B is found strongly variable at wavelengths and has an inverted radio spectrum.[3][9] The asymmetry of the core is likely influenced through relativistic motion.[9] It has an extension towards northwest direction of a blob feature 25 located arcseconds away according to VLA and MERLIN observations.[10] Evidence also confirmed the core component might be variable in polarization given the polarization percentage recorded at 1600 MHz is 0.655 ± 0.6 at the position angle of 13 ± 2°.[11]

Observations with Westerbork Synthesis Radio Telescope in 1979, located an additional component in B3 0309+411B. This component appears resolved and is located 87 arcseconds away from the compact component. Further evidence also showed it is extended and has a flat spectral index between 178 MHz and 1.4 GHz. It is suggested the source might belong to a D2 classification; sources that are depicted with a flat spectrum component and coincident with an optical object.[12]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "NED search results for B3 0309+411B". https://ned.ipac.caltech.edu/byname?objname=ICRF+J031301.9+412001&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. 
  2. ↑ Kataoka, J.; Stawarz, Ł.; Takahashi, Y.; Cheung, C. C.; Hayashida, M.; Grandi, P.; Burnett, T. H.; Celotti, A. et al. (2011-09-22). "Broad-line Radio Galaxies Observed with Fermi LAT: The Origin of the GeV γ-ray Emission". The Astrophysical Journal 740 (1): 29. doi:10.1088/0004-637x/740/1/29. ISSN 0004-637X. Bibcode: 2011ApJ...740...29K. https://doi.org/10.1088/0004-637x/740/1/29. 
  3. ↑ 3.0 3.1 3.2 3.3 Bruyn, De; G, A. (December 1989). "0309+411, an Mpc-sized core-dominated radio galaxy/quasar." (in en). Astronomy and Astrophysics 226: L13–L16. ISSN 0004-6361. Bibcode: 1989A&A...226L..13D. https://articles.adsabs.harvard.edu/pdf/1989A%26A...226L..13D. 
  4. ↑ Paliya, Vaidehi S.; Saikia, D. J.; Domínguez, Alberto; Stalin, C. S. (November 2024). "Radio Morphology of Gamma-Ray Sources: Double-lobed Radio Sources" (in en). The Astrophysical Journal 976 (1): 120. doi:10.3847/1538-4357/ad85e2. ISSN 0004-637X. Bibcode: 2024ApJ...976..120P. 
  5. ↑ Schoenmakers, A. P.; Mack, K.-H.; de Bruyn, A. G.; Röttgering, H. J. A.; Klein, U.; van der Laan, H. (October 2000). "A new sample of giant radio galaxies from the WENSS survey. II. A multi-frequency radio study of a complete sample: Properties of the radio lobes and their environment" (in en). Astronomy and Astrophysics Supplement Series 146 (2): 293–322. doi:10.1051/aas:2000267. ISSN 0365-0138. Bibcode: 2000A&AS..146..293S. 
  6. ↑ Henstock, D. R.; Browne, I. W. A.; Wilkinson, P. N.; Taylor, G. B.; Vermeulen, R. C.; Pearson, T. J.; Readhead, A. C. S. (September 1995). "The Second Caltech--Jodrell Bank VLBI Survey. II. Observations of 102 of 193 Sources" (in en). The Astrophysical Journal Supplement Series 100: 1. doi:10.1086/192206. ISSN 0067-0049. Bibcode: 1995ApJS..100....1H. https://articles.adsabs.harvard.edu/pdf/1995ApJS..100....1H. 
  7. ↑ Konar, C.; Saikia, D. J.; Ishwara-Chandra, C. H.; Kulkarni, V. K. (2004-12-11). "Radio observations of a few giant sources". Monthly Notices of the Royal Astronomical Society 355 (3): 845–854. doi:10.1111/j.1365-2966.2004.08362.x. ISSN 1365-2966. Bibcode: 2004MNRAS.355..845K. 
  8. ↑ Cheng, X.-P.; An, T.; Frey, S.; Hong, X.-Y.; He, X.; Kellermann, K. I.; Lister, M. L.; Lao, B.-Q. et al. (2020-04-01). "Compact Bright Radio-loud AGNs. III. A Large VLBA Survey at 43 GHz". The Astrophysical Journal Supplement Series 247 (2): 57. doi:10.3847/1538-4365/ab791f. ISSN 0067-0049. Bibcode: 2020ApJS..247...57C. 
  9. ↑ 9.0 9.1 Pirya, A.; Saikia, D. J.; Singh, M.; Chandola, H. C. (2012-09-20). "A study of the environments of large radio galaxies using SDSS". Monthly Notices of the Royal Astronomical Society 426 (1): 758–763. doi:10.1111/j.1365-2966.2012.21656.x. ISSN 0035-8711. Bibcode: 2012MNRAS.426..758P. 
  10. ↑ Saikia, D. J.; Shastri, P.; Cornwell, T. J.; Junor, W.; Muxlow, T. W. B. (June 1989). "Extragalactic Sources with Very Asymmetric Radio Structure - VLA and MERLIN Observations" (in en). Journal of Astrophysics and Astronomy 10 (2): 203–235. doi:10.1007/BF02719317. ISSN 0250-6335. Bibcode: 1989JApA...10..203S. https://articles.adsabs.harvard.edu/pdf/1989JApA...10..203S. 
  11. ↑ Saikia, D. J.; Shastri, P.; Sinha, R. P.; Kapahi, V. K.; Swarup, G. (December 1984). "Extragalactic sources with asymmetric radio structure". Journal of Astrophysics and Astronomy 5 (4): 429–473. doi:10.1007/bf02714470. ISSN 0250-6335. Bibcode: 1984JApA....5..429S. https://articles.adsabs.harvard.edu//full/1984JApA....5..429S/0000466.000.html. 
  12. ↑ Kapahi, V. K. (April 1979). "Westerbork observations of flat spectrum galaxies in the 5 GHz "S4" survey." (in en). Astronomy and Astrophysics 74: L11–L14. ISSN 0004-6361. Bibcode: 1979A&A....74L..11K. https://articles.adsabs.harvard.edu/pdf/1979A%26A....74L..11K. 



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