J/A+A/713/A269ivo://CDS.VizieR/J/A+A/713/A269CDSSimongini A.Acero F.Imbrogno M.Wise J.L.Sollerman J.Schulze S.,Kuin N.P.M.Chen T.X.Fremling C.Gangopadhyay A.Kasliwal M.M.,Laher R.R.McGrath Z.Perley D.A.Purdum J.N.Rehemtulla N.,Rich R.M.Riddle R.2026-09-22T09:48:09Z2026-09-22T10:45:33ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsupernovaespectrophotometryultraviolet-astronomygamma-ray-astronomyThe Type I super-luminous supernova SN 2024jlc (ZTF24aapadbb) exploded on the 25th of May 2024 at z=0.039. Being the closest supernova of this class discovered in recent years and one of the closest ever, represented a rare opportunity to study in detail this type of objects. We performed a multi-wavelength analysis, spanning ten orders of magnitude in frequency, including optical/UV photometry and spectroscopy, soft and hard X-rays, and high-energy gamma-rays. We characterized the event as a slow-evolving and He-rich supernova, with one of the lowest peak luminosities reported for a super-luminous event M_g_~-19.37mag, and a light curve evolution compatible with both circumstellar interaction and magnetar spin-down models, with noticeable contribution from 56Ni decay. No significant excess was found in the soft and hard X-ray bands, for which we provide upper-limits on the flux. Additionally, we analyzed two years of Fermi-LAT data, from which we report an intriguing hint of a gamma-ray signal at the ~3.6 sigma level, although no firm detection can be claimed. The gamma to optical efficiency ratio, eta=0.38, is suggestive of the presence of a central-engine scenario, similar to SN 2017egm. Our analysis suggests that SN 2024jlc could bridge the gap between SLSNe and classical stripped-envelope supernovae. While still poorly populated, this bridge could consist of all SLSN-Ib supernovae, with the key difference residing in the powering mechanism.2026A&A...713A.269Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/713/A269CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/713/A269https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/713/A269http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/713/A269https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/713/A269https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/713/A269http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/713/A269GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-rayUVdefaultJ/A+A/713/A269/tablea2SN 2024jlc light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDDate of observation (MJD)dtime.epochdoublePhasePhase from t0, t0 estimated at MJD=60455.21time.phasefloatmagApparent magnitude in Bandmagphot.magfloate_magMagnitude errormagstat.error;phot.magfloatBandObserved band (g r i z o c U B V uvw1 uvw2 uvm2)instr.bandpasscharInstInstrument (ATLAS, Swift, ZTF, LT)meta.id;instrchar