© arXiv (2025). DOI: 10.48550/arxiv.2501.18686Multi-band light curve of SN 2024jlf and best fit model light curves.
An international team of astronomers has investigated a
newly detected Type II supernova designated SN 2024jlf. The new study, detailed in a paper
published Jan. 30 on the arXiv pre-print server, yields important information regarding the evolution of this supernova and the nature of its progenitor.
Type II supernovae (SNe) are the results of rapid collapse and violent explosion of massive stars (with masses above 8.0 solar masses). They are distinguished from other SNe by the presence of hydrogen in their spectra.
Based on the shape of their light curves, they are usually divided into Type IIL and Type IIP. Type IIL SNe show a steady (linear) decline after the explosion, while Type IIP exhibit a period of slower decline (a plateau) that is followed by a normal decay.
SN 2024jlf was
first spotted on May 28, 2024 using the Zwicky Transient Facility (ZTF), with a brightness of 15.88 mag. The
supernova occurred in NGC 5690 — an edge-on spiral galaxy at a redshift of 0.0058.
Subsequent observations of SN 2024jlf after its discovery have revealed that its spectrum shows a blue continuum with weak flash features, indicating a young core-collapse supernova of Type II. A search for the progenitor of SN 2024jlf has also been conducted. However, no source has been identified in the location of this supernova.
