SUPERS · Unmasking the Progenitors and Energy Sources of Superluminous Supernovae
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2018-09-01 → 2021-04-01
- EU contribution
- €185,857
- Participants
- 1
- Scheme
- MSCA-IF-EF-ST
Lines connect the coordinator with its partners.
Results in brief
Unmasking the Progenitors and Energy Sources of Superluminous Supernovae
In the past decade, a population of supernovae with luminosities 10s-100x higher than those of ordinary core-collapse and Type Ia supernovae have been discovered. These so-called "superluminous" supernovae challenge our understanding of the physical mechanisms behind supernova explosions, and of the evolution and final fates of massive stars. This action aimed to shed light on this mysterious population of rare and extreme stellar explosions through several complimentary approaches: systematically collecting a large sample for the first time using data from the ongoing Zwicky Transient Facility project; through studying their late-time spectra looking for signatures of different powering mechanisms; and studying the explosion sites within their galaxies using resolved imaging from the Hubble Space Telescope.
Data: CORDIS, © European Union
Project objective
“Superluminous” supernovae are a rare class of transients, with peak luminosities outshining ordinary core-collapse and Type Ia supernovae by factors of 10s-100, and are primarily found in dwarf galaxies. Now a decade after their discovery (and with more than 100 such supernovae reported), the energy sources and progenitors of superluminous supernovae are still a subject of intense debate, requiring either an exotic explosion mechanism (such as a pair-instability explosion) or an additional energy source (a rapidly spinning down magnetar, or interaction with dense circumstellar material). Thus, superluminous supernovae represent a challenge to our understanding both of the deaths of the most massive stars, of star formation and stellar evolution in low-metallicity environments, and of the powering of optical emission in supernovae. To make progress, several complimentary approaches are needed. Detailed studies of individual supernovae, particularly at late times, can reveal key signatures of the underlying energy source. On a larger scale, key properties of the population such as the absolute rates are currently only poorly constrained. Finally, studies of their host galaxy environments carry information about the underlying stellar populations, and therefore the progenitor stars. This action aims to uncover the progenitors and energy sources of superluminous supernovae by targeting each of these areas, utilizing one-of-a-kind data sets from the Palomar Transient Factory, the upcoming Zwicky Transient Facility, and the Hubble Space Telescope.
Original text from CORDIS.
Participants
- STOCKHOLMS UNIVERSITET · StockholmCoordinatorSweden
Links
Data: CORDIS, © European Union