4 papers
Sensitivity of the Neutron Star Equation of State Inferences to Mass and Radius Measurements
Dmitry D. Ofengeim, Peter S. Shternin, Tsvi Piran
We examine how inferences of the neutron-star equation of state depend on mass and radius observations. We update previous results with recent measurements combined with theoretica…
The 300 TeV photon from GRB 221009A: a Hint at Non-linear Lorentz Invariance Violation?
Dmitry D. Ofengeim, Tsvi Piran
The air shower array Carpet-3 detected a 300 TeV photon from the direction of GRB 221009A at 4536 s after the Fermi-GBM trigger for this event. If the association with this gamma-r…
Magnetothermal evolution of neutron star cores in the `weak-coupling' regime: implications of ambipolar diffusion for the quiescent X-ray luminosity of magnetars
N. A. Moraga, F. Castillo, D. D. Ofengeim +5
The high quiescent X-ray luminosity observed in some magnetars is widely attributed to the decay and evolution of their ultra-strong magnetic fields. Several dissipation mechanisms…
Constraining the curvature-induced quantum gravity scales via gamma-ray bursts
Dmitry D. Ofengeim, Tsvi Piran
We constrain the parameters that govern curvature-induced quantum gravity time-of-flight (TOF) effects. These TOF delays, which occur due to modified dispersion relations of partic…