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Updated: May 15, 2025

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Strongly lensed supernovae: lessons learned.

Ariel Goobar1, Joel Johansson1, Ana Sagués Carracedo1

  • 1Department of Physics, The Oskar Klein Centre, Stockholms Universitet, Stockholm SE 106 91, Sweden.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|April 10, 2025
PubMed
Summary
This summary is machine-generated.

Gravitationally lensed supernovae, discovered from space and ground, offer unique insights. These rare cosmic events enable precise cosmic measurements and studies of lensing galaxies.

Keywords:
gravitational lensingsupernovaetime-domain surveys

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Area of Science:

  • Astronomy and Astrophysics
  • Cosmology
  • Gravitational Lensing

Background:

  • The era of discovering multiply imaged gravitationally lensed supernovae has emerged over the past decade.
  • Space-based observations have been crucial for detecting cluster-lensed supernovae, which are distant, faint, and spatially resolved.
  • Ground-based surveys have identified galaxy-lensed supernovae, which are compact and bright, using the magnification of standard candles without spatial resolution.

Purpose of the Study:

  • To review the challenges associated with identifying extremely rare gravitationally lensed supernovae.
  • To highlight the unique opportunities presented by these events for scientific applications.
  • To discuss the potential for time-delay cosmography and studying lens properties.

Main Methods:

  • Analysis of space-based observations for cluster-lensed supernovae.
  • Utilization of wide-field ground-based surveys for galaxy-lensed supernovae.
  • Application of the standard candles method for detecting magnified events.

Main Results:

  • Successful identification of multiply imaged gravitationally lensed supernovae over the last decade.
  • Distinction between cluster-lensed (space-based, resolved) and galaxy-lensed (ground-based, magnified) supernovae.
  • Demonstration of the utility of these supernovae for cosmological studies.

Conclusions:

  • Gravitationally lensed supernovae are rare but invaluable cosmic probes.
  • These events provide powerful tools for time-delay cosmography.
  • Further research on lensed supernovae will enhance our understanding of lensing galaxies and the universe's expansion.