Understanding the conditions conducive to particle acceleration at collisionless,
nonrelativistic shocks is important for the origin of cosmic rays. We use hybrid (kinetic ions …

The 2021 outburst of the symbiotic recurrent nova RS Oph was monitored with the Neutron
Star Interior Composition Explorer Mission (NICER) in the 0.2–12 keV range from day one …

A long-standing question related to nova eruptions is how these eruptions might lead to dust
formation, despite the ostensibly inhospitable environment for dust within the hot, irradiated …

GeV and TeV emission from the forward shocks of supernova remnants (SNRs) indicates
that they are capable particle accelerators, making them promising sources of Galactic …

Abstract Very-high-energy (VHE; 100 GeV< E≤ 100 TeV) and high-energy (HE; 100 MeV<
E≤ 100 GeV) gamma rays were observed from the symbiotic recurrent nova RS Ophiuchi …

Nova shocks behave like scaled-down supernova remnant shocks with a lifetime of only a
few weeks or months, thereby providing a unique opportunity to study the dynamics of non …

The recently discovered high energy emission from the recurrent nova RS Ophiuchi by
Fermi-LAT (> 100 MeV), HESS and MAGIC (> 100 GeV), hints towards a possible hadronic …

Identifying the accelerators of Galactic cosmic ray (CR) protons with energies up to a few
PeV (10 15 eV) remains a theoretical and observational challenge. Supernova remnants …

Although Cherenkov detectors of high-energy neutrinos in ice and water are often optimized
to detect TeV-PeV neutrinos, they may also be sensitive to transient neutrino sources in the …

The development of the latest generation of Imaging Atmospheric Cherenkov Telescopes
(IACTs) over recent decades has led to the discovery of new extreme astrophysical …