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SN 2025fhm: A central-engine powered Ic-BL supernova associated with X-ray transient EP250304a
Cui-Ying Song, Nan Jiang, Xiaofeng Wang +32
We present X-ray, optical, and radio follow-up observations of EP250304a, an extragalactic fast X-ray transient (EFXT) discovered by the Einstein Probe. Its X-ray light curve exhib…
Generalized Predictions for the Electromagnetic Signatures of Mirror Stars
Franco Cabral, Stuart Williamson, David Curtin +1
Mirror Stars are a generic prediction of dissipative dark matter models, including minimal atomic dark matter and twin baryons in the Mirror Twin Higgs. Mirror Stars capture regula…
Nonlinear perturbations and weak shock waves in isentropic atmospheres
Tamar Faran, Christopher D. Matzner, Eliot Quataert
Acoustic perturbations to stellar envelopes can lead to the formation of weak shock waves via nonlinear wave-steepening. Close to the stellar surface, the weak shock wave increases…
Electromagnetic Signatures of Mirror Stars
Isabella Armstrong, Berkin Gurbuz, David Curtin +1
Mirror Stars are a generic prediction of dissipative dark matter models, including minimal atomic dark matter and twin baryons in the Mirror Twin Higgs. Mirror Stars can capture re…
Misaligned precessing jets are choked by the accretion disk wind
Wenbin Lu, Tatsuya Matsumoto, Christopher D. Matzner
We analytically and numerically study the hydrodynamic propagation of a precessing jet in the context of tidal disruption events (TDEs) where the star's angular momentum is misalig…
Observability of flashes from ejecta crashes in aspherical supernovae, with application to SN 2008D
Benjamin Scully, Christopher D. Matzner, Almog Yalinewich
A new class of transient, which has been hypothesized to accompany the explosion of an aspherical compact supernova, would arise when streams of ejecta collide outside the star. Ho…