Late-time JWST spectra of SN 2023xgo detect cool silicate or carbonaceous dust masses of order 0.01-0.03 solar masses plus narrow He I emission indicating ongoing circumstellar interaction at +377 days.
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Population synthesis from binary evolution models predicts periodic neutron star-companion interactions in more than half of surviving hydrogen-poor core-collapse supernovae, with periods peaking at 20-50 days and lasting 0.5-10 years.
Uniform analysis of 25 events shows SNe Ibn, SNe Icn, and FBOTs overlap in peak luminosity, rise/decline times, colors, and fitted CSM/ejecta parameters, supporting a shared dense-CSM interaction framework for most but not the most extreme FBOTs.
citing papers explorer
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JWST Reveals Large Reservoirs of Dust and Ongoing Circumstellar Interaction in SN Ibn/Icn 2023xgo over a Year Post-Explosion
Late-time JWST spectra of SN 2023xgo detect cool silicate or carbonaceous dust masses of order 0.01-0.03 solar masses plus narrow He I emission indicating ongoing circumstellar interaction at +377 days.
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Neutron star-companion interaction in core collapse supernovae. Population synthesis based on detailed binary evolution models
Population synthesis from binary evolution models predicts periodic neutron star-companion interactions in more than half of surviving hydrogen-poor core-collapse supernovae, with periods peaking at 20-50 days and lasting 0.5-10 years.
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Mapping the Dense Circumstellar Environments of SNe Ibn, SNe Icn, and Fast Blue Optical Transients
Uniform analysis of 25 events shows SNe Ibn, SNe Icn, and FBOTs overlap in peak luminosity, rise/decline times, colors, and fitted CSM/ejecta parameters, supporting a shared dense-CSM interaction framework for most but not the most extreme FBOTs.