16 citations · 75 across the 11 of their papers we have counts for
11 papers · 1 filter
Survival of ultraheavy nuclei in astrophysical sources: applications to protomagnetar outflows
Nick Ekanger, Mukul Bhattacharya, Kohta Murase +1
Outflows of rapidly rotating protomagnetars have been considered as attractive sites for the synthesis of nuclei heavier than iron, but the question remains whether these nuclei ar…
Super-knee cosmic rays from interacting supernovae
Nick Ekanger, Shigeo S. Kimura, Kazumi Kashiyama
There is increasing evidence that, in the very late phase of stellar evolution before core collapse, massive stars have winds with large mass loss rates that give rise to a dense c…
Gamma-ray emission from decays of boosted nuclei in protomagnetar jets
Sean Heston, Nick Ekanger, Shunsaku Horiuchi
We examine the detectability of -ray emission originating from the radioactive decays of unstable nuclei that are synthesized in relativistic outflows launched in magnetorotatio…
Ultraheavy Ultrahigh-Energy Cosmic Rays
B. Theodore Zhang, Kohta Murase, Nick Ekanger +2
We investigate the propagation of ultraheavy (UH) nuclei as ultrahigh-energy cosmic rays (UHECRs). We show that their energy loss lengths at EeV are significantly lon…
Multi-Messenger Astrology
Gwen Walker, Nick Ekanger, R. Andrew Gustafson +1
It has long been accepted that the cosmos determine our personalities, relationships, and even our fate. Unlike our condensed matter colleagues - who regularly use quantum mechanic…
Quasithermal GeV neutrinos from neutron-loaded magnetized outflows in core-collapse supernovae: spectra and light curves
Jose Alonso Carpio, Nick Ekanger, Mukul Bhattacharya +2
Rapidly rotating and strongly magnetized protoneutron stars (PNSs) created in core-collapse supernovae can drive relativistic magnetized winds. Ions and neutrons can be co-accelera…
Diffuse supernova neutrino background with up-to-date star formation rate measurements and long-term multidimensional supernova simulations
Nick Ekanger, Shunsaku Horiuchi, Hiroki Nagakura +1
The sensitivity of current and future neutrino detectors like Super-Kamiokande (SK), JUNO, Hyper-Kamiokande (HK), and DUNE is expected to allow for the detection of the diffuse sup…
Diffuse neutrino background from past core-collapse supernovae
Shin'ichiro Ando, Nick Ekanger, Shunsaku Horiuchi +1
Core-collapse supernovae are among the most powerful explosions in the universe, emitting thermal neutrinos that carry away the majority of the gravitational binding energy release…
Nucleosynthesis in outflows of compact objects and detection prospects of associated kilonovae
Nick Ekanger, Mukul Bhattacharya, Shunsaku Horiuchi
We perform a comparative analysis of nucleosynthesis yields from binary neutron star (BNS) mergers, black hole-neutron star (BHNS) mergers, and core-collapse supernovae (CCSNe) wit…
Impact of late-time neutrino emission on the diffuse supernova neutrino background
Nick Ekanger, Shunsaku Horiuchi, Kei Kotake +1
In the absence of high-statistics supernova neutrino measurements, estimates of the diffuse supernova neutrino background (DSNB) hinge on the precision of simulations of core-colla…
Systematic exploration of heavy element nucleosynthesis in protomagnetar outflows
Nick Ekanger, Mukul Bhattacharya, Shunsaku Horiuchi
We study the nucleosynthesis products in neutrino-driven winds from rapidly rotating, highly magnetised and misaligned protomagnetars using the nuclear reaction network SkyNet. We…