B3 0309+411B
| B3 0309+411 | |
|---|---|
 Sloan Digital Sky Survey image of radio galaxy B3 0309+411B. | |
| Observation data (J2000.0 epoch) | |
| Constellation | Perseus |
| Right ascension | 03h 13m 01.96s[1] |
| Declination | +41° 20′ 01.18″[1] |
| Redshift | 0.134000[1] |
| Heliocentric radial velocity | 40,172 km/s[1] |
| Distance | 1.632 Gly |
| Apparent magnitude (B) | 18.0 |
| Characteristics | |
| Type | Radio 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
[edit]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
[edit]- ^ a b c d e f g h "NED search results for B3 0309+411B". NASA/IPAC Extragalactic Database. Retrieved 2025-06-22.
- ^ Kataoka, J.; Stawarz, Ł.; Takahashi, Y.; Cheung, C. C.; Hayashida, M.; Grandi, P.; Burnett, T. H.; Celotti, A.; Fegan, S. J.; Fortin, P.; Maeda, K.; Nakamori, T.; Taylor, G. B.; Tosti, G.; Digel, S. W. (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. arXiv:1107.3370. Bibcode:2011ApJ...740...29K. doi:10.1088/0004-637x/740/1/29. ISSN 0004-637X.
- ^ a b c d Bruyn, De; G, A. (December 1989). "0309+411, an Mpc-sized core-dominated radio galaxy/quasar". Astronomy and Astrophysics. 226: L13 – L16. Bibcode:1989A&A...226L..13D. ISSN 0004-6361.
- ^ Paliya, Vaidehi S.; Saikia, D. J.; Domínguez, Alberto; Stalin, C. S. (November 2024). "Radio Morphology of Gamma-Ray Sources: Double-lobed Radio Sources". The Astrophysical Journal. 976 (1): 120. arXiv:2410.10192. Bibcode:2024ApJ...976..120P. doi:10.3847/1538-4357/ad85e2. ISSN 0004-637X.
- ^ 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". Astronomy and Astrophysics Supplement Series. 146 (2): 293–322. arXiv:astro-ph/0008246. Bibcode:2000A&AS..146..293S. doi:10.1051/aas:2000267. ISSN 0365-0138.
- ^ 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". The Astrophysical Journal Supplement Series. 100: 1. Bibcode:1995ApJS..100....1H. doi:10.1086/192206. ISSN 0067-0049.
- ^ 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. arXiv:astro-ph/0408534. Bibcode:2004MNRAS.355..845K. doi:10.1111/j.1365-2966.2004.08362.x. ISSN 1365-2966.
- ^ Cheng, X.-P.; An, T.; Frey, S.; Hong, X.-Y.; He, X.; Kellermann, K. I.; Lister, M. L.; Lao, B.-Q.; Li, X.-F.; Mohan, P.; Yang, J.; Wu, X.-C.; Zhang, Z.-L.; Zhang, Y.-K.; Zhao, W. (2020-04-01). "Compact Bright Radio-loud AGNs. III. A Large VLBA Survey at 43 GHz". The Astrophysical Journal Supplement Series. 247 (2): 57. arXiv:2003.01382. Bibcode:2020ApJS..247...57C. doi:10.3847/1538-4365/ab791f. ISSN 0067-0049.
- ^ a b 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. arXiv:1207.1566. Bibcode:2012MNRAS.426..758P. doi:10.1111/j.1365-2966.2012.21656.x. ISSN 0035-8711.
- ^ 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". Journal of Astrophysics and Astronomy. 10 (2): 203–235. Bibcode:1989JApA...10..203S. doi:10.1007/BF02719317. ISSN 0250-6335.
- ^ 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. Bibcode:1984JApA....5..429S. doi:10.1007/bf02714470. ISSN 0250-6335.
- ^ Kapahi, V. K. (April 1979). "Westerbork observations of flat spectrum galaxies in the 5 GHz "S4" survey". Astronomy and Astrophysics. 74: L11 – L14. Bibcode:1979A&A....74L..11K. ISSN 0004-6361.
