{"id":504,"date":"2025-09-05T13:16:28","date_gmt":"2025-09-05T11:16:28","guid":{"rendered":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/?p=504"},"modified":"2025-09-05T13:35:56","modified_gmt":"2025-09-05T11:35:56","slug":"protons-neutrinos-and-gamma-rays-in-spider-pulsar-systems","status":"publish","type":"post","link":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/protons-neutrinos-and-gamma-rays-in-spider-pulsar-systems\/","title":{"rendered":"Protons, neutrinos and gamma-rays in spider pulsar systems"},"content":{"rendered":"

[vc_row][vc_column width=”2\/3″][vc_column_text css=””]In recent years, the LHAASO detector<\/strong> has opened a new window to the very and ultra-high energy Galactic gamma-ray sky, revealing numerous sources capable of emitting in this energy range. However, most of these sources remain unidentified.<\/p>\n

At the same time, the IceCube detector<\/strong> has finally established the existence of a Galactic neutrino signal, which could partially originate from some of the sources observed by LHAASO.<\/p>\n

In this context, we investigated compact binary millisecond pulsars<\/strong> as potential sources of very high-energy gamma-rays and neutrinos. A compact binary millisecond pulsar is a fast-spinning neutron star in a compact orbit with a low mass companion, collectively known as spider systems<\/em>.<\/p>\n

In such systems, the powerful winds from the pulsar and its companion collide, creating an intrabinary shock<\/strong> that can accelerate particles to enormous energies. These systems are typically considered efficient accelerators of electrons and positrons, which generate gamma-rays via synchrotron radiation and inverse Compton scattering.<\/p>\n

In this work, we assume that protons<\/strong> can be extracted from the neutron star surface and subsequently accelerated at the intrabinary shock and\/or within the pulsar wind.<\/p>\n

Our results show that for very energetic spider pulsars with a large spin-down power and a large magnetic field in the companion region, the gamma-ray emission<\/strong> could be detectable by future gamma-ray facilities such as CTA and or even by LHAASO, while the neutrino emission<\/strong> could be detectable by the future TRIDENT detector.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_empty_space]