49 citations · 97 across the 6 of their papers we have counts for
9 papers
A Kinetic Study of the Saturation of the Bell Instability
Georgios Zacharegkas, Damiano Caprioli, Colby Haggerty +1
The nonresonant cosmic ray instability, predicted by Bell (2004), is thought to play an important role in the acceleration and confinement of cosmic rays (CR) close to supernova re…
Cosmic rays from massive star clusters : A close look at Westerlund 1
Sourav Bhadra, Siddhartha Gupta, Biman B. Nath +1
We study the effect of cosmic ray (CR) acceleration in the massive compact star cluster Westerlund 1 in light of its recent detection in -rays. Recent observations reveal a $1/r…
Non-resonant Streaming Instability driven by Leptons
Siddhartha Gupta, Damiano Caprioli, Colby Haggerty
Using fully-kinetic plasma simulations, we study the non-resonant (Bell) streaming instability driven by energetic leptons. We identify the necessary conditions to drive it and the…
Role of cosmic rays in the early stages of galactic outflows
Ranita Jana, Siddhartha Gupta, Biman B. Nath
Using an idealized set-up, we investigate the dynamical role of cosmic rays (CRs) in the early stages of galactic outflows for galaxies of halo masses , and $10^{…
Realistic modeling of wind and supernovae shocks in star clusters: addressing and other problems in Galactic cosmic rays
Siddhartha Gupta, Biman B. Nath, Prateek Sharma +1
Cosmic ray (CR) sources leave signatures in the isotopic abundances of CRs. Current models of Galactic CRs that consider supernovae (SNe) shocks as the main sites of particle accel…
Modeling the Saturation of the Bell Instability Using Hybrid Simulations
Georgios Zacharegkas, Damiano Caprioli, Colby Haggerty
The nonresonant cosmic ray instability, predicted by Bell (2004), is thought to play an important role in the acceleration and confinement of cosmic rays (CRs) close to supernova r…