ASKAP J173608.2–321635 explained

ASKAP J173608.2–321635 is an unidentified astronomical radio source that sends "radio signals … from the direction of the Centre galaxy". It is nicknamed "Andy's Object" after its discoverer, Ziteng (Andy) Wang, from the University of Sydney in Australia.^[1] The object was detected using the Australian Square Kilometer Array Pathfinder and MeerKAT radio telescopes. It is not visible to "the most powerful non-radio telescopes" and was detected six times between 2020 January and 2020 September.^[2] This may be a new class of object because no counterpart has been detected at multiple wavelengths, which "rules out flaring stars, binary systems, NSs, GRBs, or supernovae as its source". The radio emissions exhibit a high level of polarization, suggesting scattering as a result of a black hole.

Notes and References

1. Web site: Something strange is sending radio waves from the centre of the galaxy . Leah . Crane . New Scientist . October 12, 2021 . 2023-03-18.
2. Discovery of ASKAP J173608.2–321635 as a Highly Polarized Transient Point Source with the Australian SKA Pathfinder . Wang . Ziteng . Kaplan . David L. . Murphy . Tara . Lenc . Emil . Dai . Shi . Barr . Ewan . Dobie . Dougal . Gaensler . B. M. . Heald . George . Leung . James K. . o'Brien . Andrew . Pintaldi . Sergio . Pritchard . Joshua . Rea . Nanda . Sivakoff . Gregory R. . Stappers . B. W. . Stewart . Adam . Tremou . E. . Wang . Yuanming . Woudt . Patrick A. . Zic . Andrew . The Astrophysical Journal . 920 . 1 . 45 . 2021 . 2109.00652 . 2021ApJ...920...45W . 10.3847/1538-4357/ac2360 . 237386202. free .