3 papers
astro-ph.HE2026
Geminga and Monogem in the CTAO Era: Probing TeV Halos and Cosmic-Ray Transport
Youyou Li, Oscar Macias, Manuela Vecchi +1
TeV halos around Geminga and Monogem (B0656+14) reveal regions of strongly suppressed diffusion near middle-aged pulsars. Determining the sizes and magnetic-field strengths of thes…
astro-ph.GA2026
Prompt cusps in hierarchical dark matter halos: Implications for annihilation boost
Shin'ichiro Ando, Martín Moró González, Youyou Li
Recent simulations have identified long-lived ``prompt cusps'' -- compact remnants of early density peaks with inner profiles . They can survive hierarchical ass…
astro-ph.HE2024
Multi-messenger modeling of the Monogem pulsar halo
Youyou Li, Oscar Macias, Shinichiro Ando +1
The High-Altitude Water Cherenkov Telescope (HAWC) has detected TeV halos associated with two nearby pulsars/pulsar wind nebulae (PWN) -- Geminga and B0656+14. These TeV halos exte…