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30 papers · 2 filters
A mildly relativistic wide-angle outflow in the neutron star merger GW170817
K. P. Mooley, E. Nakar, K. Hotokezaka +22
GW170817 is the first gravitational wave detection of a binary neutron star merger. It was accompanied by radiation across the electromagnetic spectrum and localized to the galaxy…
Magnetorotational instability in eccentric disks
Chi-Ho Chan, Julian H. Krolik, Tsvi Piran
Eccentric disks arise in such astrophysical contexts as tidal disruption events, but it is unknown whether the magnetorotational instability (MRI), which powers accretion in circul…
Positron Annihilation in the Nuclear Outflows of the Milky Way
Fiona H. Panther, Roland M. Crocker, Yuval Birnboim +2
Observations of soft gamma rays emanating from the Milky Way from SPI/\textit{INTEGRAL} reveal the annihilation of positrons every second in the Galactic bulge…
Physics of the saturation of particle acceleration in relativistic magnetic reconnection
Daniel Kagan, Ehud Nakar, Tsvi Piran
We investigate the saturation of particle acceleration in relativistic reconnection using two-dimensional particle-in-cell simulations at various magnetizations σ. We find that the…
Lower limits on the nucleosynthezis of Ti and Fe in the dynamic spiral-arms model
David Benyamin, Nir J. Shaviv
We have previously focused on studying the electron-capture isotopes within the dynamic spiral-arms model and empirically derived the energy dependence of the electron attachment r…
Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star
Iair Arcavi, D. Andrew Howell, Daniel Kasen +50
Every supernova hitherto observed has been considered to be the terminal explosion of a star. Moreover, all supernovae with absorption lines in their spectra show those lines decre…