2MASX J10222849+5006200

2MASX J10222849+5006200
2MASX J10222849+5006200 captured by SDSS
Observation data (J2000.0 epoch)
Constellation	Ursa Major
Right ascension	10h 22m 28.44s
Declination	+50d 06m 19.83s
Redshift	0.158413
Heliocentric radial velocity	47,491 km/s
Distance	2.455 Gly (752.7 Mpc)
Group or cluster	Abell 980
Apparent magnitude (V)	0.031
Apparent magnitude (B)	0.041
Surface brightness	17.5
Characteristics
Type	BrCLG
Apparent size (V)	0.44' x 0.28'
Notable features	Oldest fossil radio galaxy containing double radio lobes
Other designations
OGC 286, PGC 2362940, NVSS J102228+500620, SDSS J102228.44+500619.8, CXOGSG J102228.4+500619, RX J1022.4+5006:[ZEH2003] 04

2MASX J10222849+5006200 also known as PGC 2362940, is a massive Type-cD elliptical galaxy located in the constellation of Ursa Major. With the redshift of 0.15, the galaxy is located 2.4 billion light-years away from Earth.[1]

An optically bright galaxy,[2] 2MASX J10222849+5006200 is the brightest cluster galaxy (BCG) inside the galaxy cluster, Abell 980. The cluster is located at z = 0.1582,[3] and is X-ray luminous (L_X = 7.1 × 10^44 erg s^−1),[4] containing a mild intracluster medium temperature of 7.1 keV.[5]

2MASX J10222849+5006200 is classified a low-excitation radio galaxy with a 1.4 GHz luminosity range between 2 × 10^23 and 3 × 10^25 W Hz^−1.[6] It has an ellipsoidal stellar halo measuring ~80 kpc[7] with two diffuse ultra-steep spectrum radio sources around the galaxy, extending about ~100 kpc.[8]

In August 2022, this galaxy became a subject of interest. Indian astronomers from Savitribai Phule Pune University noticed a burst of radio jet activity, from its central black hole. Led by Surajit Paul, he mentioned the first pair of radio lobes discovered are the oldest he and the astronomers had seen. They also detected diffuse radio structures formed 260 million years ago and 1.2 million years in length when using the Giant Meterwave Radio Telescope.[9]

Following the primary pair of radio lobes to 2MASX J10222849+5006200, another team of astronomers led by Gopal-Krishna, found the galaxy has drifted to the central region of the cluster by 250,000 light-years from its original position. Here, the galaxy erupted again by going through a new active phrase; it created another set of radio lobes, this time younger. Because both the old and young radio lobes lost their collinearity when their parent galaxy moved, this creates a 'Detached-Double-Double Radio Galaxy' (dDDRG) system.[10][9]

References

1. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-06-21.
2. Ogle, Patrick M.; Lanz, Lauranne; Appleton, Philip N.; Helou, George; Mazzarella, Joseph (2019-07-01). "A Catalog of the Most Optically Luminous Galaxies at z < 0.3: Super Spirals, Super Lenticulars, Super Post-mergers, and Giant Ellipticals". The Astrophysical Journal Supplement Series. 243 (1): 14. arXiv:1904.02806. Bibcode:2019ApJS..243...14O. doi:10.3847/1538-4365/ab21c3. ISSN 0067-0049.
3. Lebedev, V. S.; Lebedeva, I. A. (1991-01-01). "Compiled list of clusters of galaxies with measured redshifts". Bulletin of the Special Astrophysics Observatory. 31: 88–125. Bibcode:1991BSAO...31...88L.
4. Rudnick, Lawrence; Lemmerman, Jeffrey A. (2009-05-12). "AN OBJECTIVE SURVEY OF Mpc-SCALE RADIO EMISSION IN 0.03 <z< 0.3 BRIGHT X-RAY CLUSTERS". The Astrophysical Journal. 697 (2): 1341–1357. arXiv:0903.0335. Bibcode:2009ApJ...697.1341R. doi:10.1088/0004-637x/697/2/1341. ISSN 0004-637X.
5. Ebeling, H.; Voges, W.; Bohringer, H.; Edge, A. C.; Huchra, J. P.; Briel, U. G. (1996-08-01). "Properties of the X-ray-brightest Abell-type clusters of galaxies (XBACs) from ROSAT All-Sky Survey data - I. The sample". Monthly Notices of the Royal Astronomical Society. 281 (3): 799–829. arXiv:astro-ph/9602080. Bibcode:1996MNRAS.281..799E. doi:10.1093/mnras/281.3.799. ISSN 0035-8711.
6. Lin, Yen-Ting; Huang, Hung-Jin; Chen, Yen-Chi (2018-05-01). "An Analysis Framework for Understanding the Origin of Nuclear Activity in Low-power Radio Galaxies". The Astronomical Journal. 155 (5): 188. arXiv:1803.02482. Bibcode:2018AJ....155..188L. doi:10.3847/1538-3881/aab5b4. ISSN 0004-6256.
7. Salunkhe, Sameer; Paul, Surajit; Krishna, Gopal; Sonkamble, Satish; Bhagat, Shubham (August 2022). "Deciphering the ultra-steep-spectrum diffuse radio sources discovered in the cool-core cluster Abell 980". Astronomy & Astrophysics. 664: A186. arXiv:2206.13550. Bibcode:2022A&A...664A.186S. doi:10.1051/0004-6361/202243438. ISSN 0004-6361.
8. Giacintucci, Simona; Markevitch, Maxim; Cassano, Rossella; Venturi, Tiziana; Clarke, Tracy E.; Kale, Ruta; Cuciti, Virginia (2019-07-26). "Expanding the Sample of Radio Minihalos in Galaxy Clusters". The Astrophysical Journal. 880 (2): 70. arXiv:1906.07087. Bibcode:2019ApJ...880...70G. doi:10.3847/1538-4357/ab29f1. ISSN 1538-4357.
9. Starr, Michelle (2022-08-27). "The Oldest Fossil Radio Galaxy Discovered Yet Has Been Found Hiding in a Cluster". ScienceAlert. Retrieved 2024-06-30.
10. Gopal-Krishna; Paul, Surajit; Salunkhe, Sameer; Sonkamble, Satish (2022-07-11), "The radio source in Abell 980: A Detached-Double-Double Radio Galaxy?", Publications of the Astronomical Society of Australia, 39, arXiv:2207.05166, Bibcode:2022PASA...39...49G, doi:10.1017/pasa.2022.30