First radio observations of SN 2023fyq detect a dense circumstellar shell with mass-loss rate ~0.004 solar masses per year ejected 0.7-3 years before explosion, consistent with a merger origin.
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7 Pith papers cite this work. Polarity classification is still indexing.
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VLBI at 4.9 GHz plus multi-epoch survey data reveal a fading parsec-scale radio component near the optical center of a dwarf galaxy, interpreted as transient ejecta from IMBH accretion.
Radio and X-ray data on four old Type IIn supernovae show mass-loss rates 1-2 orders of magnitude below optical estimates, indicating rapidly evolving progenitor winds over the final centuries before explosion.
Late-time radio observations of SN 2012au show re-brightening best explained by emission from a newborn pulsar wind nebula rather than continued shock interaction with circumstellar material.
Late-time radio rebrightening in SN 2012ap is consistent with either progenitor mass-loss variation producing a density enhancement or an off-axis energetic jet viewed at large angle, potentially reclassifying it as GRB-like rather than weakly engine-driven.
Reports 550 radio sources in one neutrino field and outlines a future SKA-Mid plus VLBI census strategy to find potential neutrino-emitting sources.
SKA+VLBI will enable routine mas-scale imaging of nearby extragalactic supernovae to measure shock deceleration and test explosion mechanisms.
citing papers explorer
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Detection of a parsec-scale, compact, and fading ejecta from an accreting massive black hole
VLBI at 4.9 GHz plus multi-epoch survey data reveal a fading parsec-scale radio component near the optical center of a dwarf galaxy, interpreted as transient ejecta from IMBH accretion.
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Fading Echoes of Interaction: Probing Centuries of Preexplosion Mass-Loss in Four Type IIn Supernovae
Radio and X-ray data on four old Type IIn supernovae show mass-loss rates 1-2 orders of magnitude below optical estimates, indicating rapidly evolving progenitor winds over the final centuries before explosion.
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Old and Bright: The Remarkable Radio Brightening of the Engine-driven SN 2012au Several Years After Explosion Signals the Birth of a PWN
Late-time radio observations of SN 2012au show re-brightening best explained by emission from a newborn pulsar wind nebula rather than continued shock interaction with circumstellar material.
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A 14-year-old Mystery: The Peculiar Case of the Engine-driven SN 2012ap
Late-time radio rebrightening in SN 2012ap is consistent with either progenitor mass-loss variation producing a density enhancement or an off-axis energetic jet viewed at large angle, potentially reclassifying it as GRB-like rather than weakly engine-driven.
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A Census of Variable and Transient Radio Sources Within High-Energy Neutrino Fields
Reports 550 radio sources in one neutrino field and outlines a future SKA-Mid plus VLBI census strategy to find potential neutrino-emitting sources.
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Unraveling the mysteries of supernovae with SKA+VLBI
SKA+VLBI will enable routine mas-scale imaging of nearby extragalactic supernovae to measure shock deceleration and test explosion mechanisms.