【5.14; Seminar】2024年粒子天体物理重点实验室系列学术报告 #18：Star-forming environments as sources of high-energy gamma-rays and neutrinos

时间/Time： 5月14日上午10: 00/Tuesday, May 14th at 10:00 am

地点/Location：多学科楼228会议室/Multidisciplinary Building 228

报告人/Speaker：Marco Chianese (University of Naples “Federico”)

题目/Title：Star-forming environments as sources of high-energy gamma-rays and neutrinos

主持人/Host：Songzhan Chen（陈松战）

个人简介/Biography：

Marco Chianese is a research fellow at the University of Naples “Federico” since December 2020. He obtained the PhD in Physics in early 2018 at the University of Naples with a thesis on dark matter indirect searches at neutrino telescopes with a multi-messenger approach. He then was a postdoc at the University of Southampton in the United Kingdom for one year (2018) and at the the center of excellence for Gravitation and Astroparticle Physics (GRAPPA) for two years (2019-2020).

His researches activitiy is devoted to a wide spectrum of topics in astroparticle physics including: indirect probes of dark matter and physics beyond the Standard Model exploiting multi-messenger astrophysical data; astrophysical studies aiming at understanding the origin of diffuse flux of high-energy neutrinos and gamma-rays; theoretical particle models of dark matter beyond the WIMP paradigm.

摘要/Abstract:

Star-forming environments such as Star-Forming and StarBurst Galaxies (SFGs and SBGs), due to their high rate of supernova explosions, are expected to be very efficient producers of high-energy gamma-rays and neutrinos via hadronic interactions. In this talk, I will investigate these environments both as diffuse and point-like emitters of gamma-rays and neutrinos, using the state-of-the-art modeling for the cosmic-ray (CR) transport. I will present the latest (15-year) gamma-ray point-like measurements of local galaxies by Fermi-LAT in the GeV-TeV  energy range, and assess the expected diffuse high-energy neutrino flux from the whole source population. Then, I will discuss forecasts for the Cherenkov Telescope Array (CTA) and the future neutrino telescopes telescopes, quantifying the potentiality of future measurements to probe the hadronic nature of these sources and distinguish between several CR transport models. Finally, I will explore the modifications of the standard astrophysical emission in beyond-the-standard-model scenarios and place novel constraints on the parameter space of sub-GeV dark matter particles and axion-like-particles.