New Preprints Advance Understanding of High-Energy Transients and Interstellar Objects Through Radio, X-Ray, and Submillimeter Observations
Three new astrophysical studies use advanced observational techniques to constrain physical properties of supernovae, fast blue optical transients, and an interstellar comet. The first two papers develop methods to infer ejecta structure and asymmetries from radio and X-ray data, while the third provides early submillimeter constraints on molecular emission from interstellar object 3I/ATLAS. These studies advance understanding of explosive transients and the composition of objects from other planetary systems.
Three new preprints posted to arXiv advance observational astrophysics across different wavelength regimes. The first paper presents a method to infer inhomogeneities and asymmetries in unresolved high-energy transients from radio synchrotron self-absorption spectra, demonstrating the technique on supernova 2016coi and fast blue optical transient AT2018cow. The second reports multi-epoch X-ray observations of the nearby superluminous supernova 2018bsz, finding that ejecta-circumstellar medium interaction better explains the data than magnetar-powered models alone. The third provides the earliest submillimeter observations of interstellar object 3I/ATLAS, setting upper limits on HCN and CO production rates and constraining the temporal evolution of HCN outgassing. Collectively, these studies demonstrate how multi-wavelength observations of transient and moving objects can constrain their physical structure, energy sources, and chemical composition.
What different sources said
- arXiv astro-phCenter
JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS
- arXiv astro-phCenter
Multi-Epoch X-Ray Detection of SLSN-I 2018bsz: Constraints on the Powering Mechanism and Ejecta Structure
- arXiv astro-phCenter
Constraining inhomogeneities and asymmetries in SNe, FBOTs, and other high-energy transients from unresolved radio observations
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