PS1-10adi

A visual band light curve for PS1-10adi, plotted from data published by Kankare et al. (2017)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Delphinus
Right ascension 20h 42m 44.749s[2]
Declination +15° 30′ 32.24″[2]
Other designations
PS1-1000789[3]
Database references
SIMBADdata

PS1-10adi is an unusual kind of highly energetic optical transient discovered by the Pan-STARRS survey on 15 August 2010.[4] The explosion or transient event emitted 2.3×1052 ergs (2.3×1045 Joules), exceeding ASASSN-15lh. It may be a superluminous supernova or a stellar disruption event.[1] The magnitude of the explosion challenges the limits of the current models for theoretical physics.[5]

The event happened near the centre of J204244.74+153032.1 (a point in Delphinus, specifically right ascension in usual sexagesimal and then declination in decimal terms, with the point/spacing moved four places to the right in both cases). The optical transient peaked at two magnitudes brighter than its host galaxy, and remained brighter for 1000 days. Its distance can be implied by its galaxy's red shift of 0.203.[1] Balmer emission lines due to hot hydrogen showed relative motions of up to 900 km/s. The lines also had a red shoulder. There was also a hot black body continuum spectrum showing temperatures dropping from 11,000K. No X-rays or radio waves were detected from the source.[1]

Similar optical transients include PS1-13jw, CSS100217, J094806, J094608, and J233454.[1]

References

  1. 1 2 3 4 5 Kankare, E.; Kotak, R.; Mattila, S.; Lundqvist, P.; Ward, M. J.; Fraser, M.; Lawrence, A.; Smartt, S. J.; Meikle, W. P. S.; Bruce, A.; Harmanen, J.; Hutton, S. J.; Inserra, C.; Kangas, T.; Pastorello, A.; Reynolds, T.; Romero-Cañizales, C.; Smith, K. W.; Valenti, S.; Chambers, K. C.; Hodapp, K. W.; Huber, M. E.; Kaiser, N.; Kudritzki, R.-P.; Magnier, E. A.; Tonry, J. L.; Wainscoat, R. J.; Waters, C. (13 November 2017). "A population of highly energetic transient events in the centres of active galaxies". Nature Astronomy. 1 (12): 865–871. arXiv:1711.04577. Bibcode:2017NatAs...1..865K. doi:10.1038/s41550-017-0290-2. S2CID 119421626.
  2. 1 2 Valenti, S.; Kankare, E.; Mattila, S.; Pastorello, A.; Smartt, S.; Smith, K.; Kotak, R.; Ward, M.; Gezari, S.; Chornock, R.; Bresolin, F.; Kudritzki, R.; Tonry, J.; Magnier, E.; Chambers, K.; Kaiser, N.; Morgan, J.; Burgett, W.; Heasley, J.; Sweeney, W.; Waters, C.; Flewelling, H.; Price, P. A. (September 2010). "Discovery of two new supernovae and a possible AGN/luminous SN IIn in the Pan-STARRS1 3Pi faint galaxy supernova survey". The Astronomer's Telegram. 2838: 1. Bibcode:2010ATel.2838....1V. Retrieved 24 July 2022.
  3. ↑ "PS1-1000789", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2022-07-24.
  4. ↑ "Astronomers discover new type of cosmic explosion". Retrieved 20 November 2017.
  5. ↑ "PS1-10adi: New Type Of Highly Energetic Cosmic Explosions – Discovered". MessageToEagle. 15 November 2017. Retrieved 20 November 2017.


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