GLEAM-X J162759.5−523504.3 explained

GLEAM-X J162759.5-523504.3^[1] is a transient astronomical radio source, found in 2020, in archival data recorded in 2018 by the Murchison Widefield Array.^[2]

The source was active in radio for about 1 minute every 18 minutes, from January to March 2018, but has not been recorded since.^[2]

Nature of source

It seems somewhat like a Galactic Center radio transient (GCRT) except it is thought to be only about 4000light-year distant.^[2]

The radio emissions were polarised (as if affected by a magnetic field) so it may be a predicted astrophysical object called an "ultra-long period magnetar".^{[3] [4] [5]}

See also

• GPM J1839−10
• GCRT J1745−3009
• PSR J0901–4046
• Rotating radio transients (RRATs)

Further reading

• A radio transient with unusually slow periodic emission . Nature . 27 January 2022 . 26 January 2022 . N. Hurley-Walker . X. Zhang . A. Bahramian . S. J. McSweeney . T. N. O’Doherty . P. J. Hancock . J. S. Morgan . G. E. Anderson . G. H. Heald . T. J. Galvin . 10.1038/s41586-021-04272-x . 2022 . 601 . 526–530 . 601 . 35082416 . 2022Natur.601..526H . 246296294 . Not open access.
• Periodicity in recurrent fast radio bursts and the origin of ultralong period magnetars . P. Beniamini . Z. Wadiasingh . B. D. Metzger . Monthly Notices of the Royal Astronomical Society . 2020 . 496 . 3 . 3390–3401 . 10.1093/mnras/staa1783 . 23 June 2020 . free . 2003.12509 .
• Evidence for an abundant old population of Galactic ultra-long period magnetars and implications for fast radio bursts . P. Beniamini . Z. Wadiasingh . J. Hare . K. M. Rajwade . G. Younes . A. J. van der Horst . Monthly Notices of the Royal Astronomical Society . 2023 . 520 . 2 . 1872–1894 . 10.1093/mnras/stad208 . 20 January 2023 . free . 2210.09323 .
• Long-period Pulsars as Evidence of Supernova Fallback Accretion . Ronchi, Michele . Rea, Nanda . Graber, Vanessa . Hurley-Walker, Natasha . The Astrophysical Journal . 2201.11704 . 2022ApJ...934..184R . 27 January 2022 . 934 . 2 . 184 . 10.3847/1538-4357/ac7cec . 250868925 . free .
• Web site: Mysterious Object Unlike Anything Astronomers Have Seen Before . 27 January 2022 . International Centre for Radio Astronomy Research . ICRAR .

External links

• News: Curtin . Alice . 2022-02-16 . You'll be a limbo star. How (s)low can you go? . Astrobites . en-US.

Notes and References

1. A radio transient with unusually slow periodic emission . Nature . 27 January 2022 . 26 January 2022 . N. Hurley-Walker . X. Zhang . A. Bahramian . S. J. McSweeney . T. N. O’Doherty . P. J. Hancock . J. S. Morgan . G. E. Anderson . G. H. Heald . T. J. Galvin . 10.1038/s41586-021-04272-x . 2022 . 601 . 526–530 . 601 . 35082416 . 2022Natur.601..526H . 246296294 .
2. Mysterious object unlike anything astronomers have seen before . Amalyah Hart . 27 January 2022 . Cosmos Magazine .
3. Periodicity in recurrent fast radio bursts and the origin of ultralong period magnetars . Monthly Notices of the Royal Astronomical Society . 23 June 2020 . P. Beniamini . Z. Wadiasingh . B. D. Metzger . 10.1093/mnras/staa1783 . 2020 . 496 . 3390–3401 . 496 . free . 2003.12509 .
4. Web site: Mysterious Object Unlike Anything Astronomers Have Seen Before . 27 January 2022 . International Centre for Radio Astronomy Research . ICRAR .
5. Evidence for an abundant old population of Galactic ultra-long period magnetars and implications for fast radio bursts . Monthly Notices of the Royal Astronomical Society . 20 January 2023 . P. Beniamini . Z. Wadiasingh . J. Hare . K. M. Rajwade . G. Younes . A. J. van der Horst . 10.1093/mnras/stad208 . 2023 . 520 . 2 . 1872–1894 . free . 2210.09323 .