Description
Talks related to the study of supernovae
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Rodrigo Angulo (Johns Hopkins University)09/02/2026, 10:00
Cassiopeia A is a well-studied supernova remnant and one of the youngest remnants in the Milky Way with the supernova occurring in the late 1600s. First infrared (IR) echoes (Krause et al. 2005) and then scattered light echoes of Cas A were found (Rest 2008), which revealed that the supernova was a type IIb (Krause et al. 2008). Further analysis of the IR echoes showed that the EUV-UV...
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Zachary Lane (University of Canterbury)09/02/2026, 10:20
Shock breakout and, in some cases, jet-driven high-energy emission are increasingly recognized as key signatures of the earliest phases of core-collapse supernovae, especially in Type IIn systems due to their dense, interaction-dominated circumstellar environments. We present a comprehensive photometric analysis of SN$\,$2019vxm, a long-duration, luminous Type IIn supernova,...
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Conor Ransome (Steward Observatory, University of Arizona)09/02/2026, 11:00
Supernovae that interact with nearby circumstellar material shed by the progenitor shortly before the terminal explosion shed light on the late lives of massive stars. These objects are highly heterogeneous, with early observations shedding light on even more diversity. We present SN2025ngs, a nearby interacting supernova in NGC5961. SN2025ngs has a spectroscopic evolution almost mimicking...
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09/02/2026, 11:20
A bright, z = 1.95 supernova (SN) was discovered in JWST/NIRCam imaging acquired on 2023 November 17. The SN is quintuply imaged as a result of strong gravitational lensing by a foreground galaxy cluster, detected in three locations, and remarkably is the second lensed SN found in the same host galaxy. The previous lensed SN was called “Requiem,” and therefore the new SN is named “Encore.”...
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David Coulter (JHU/STScI)09/02/2026, 11:40
On September 1, 2025 the Vast Exploration for Nascent, Unexplored Sources program (VENUS) discovered a multiply-imaged supernova (SN) in JWST imaging of the galaxy cluster, MACS1931 (z~0.35). At the site of the lensed images, contemporaneous VLT/MUSE data show Lyman alpha emission from the host, placing the lensed sytem at a spectroscopic redshift = 5.13. We dub this candidate SN Eos – named...
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