Speaker
Hongyi Wu
(University of Wisconsin-Madison)
Description
Extended gamma-ray emission at TeV energies, known as TeV halos, has been observed around a few middle-aged pulsars. It has been suggested that they may also be powered by millisecond pulsars (MSPs). Using data from the HAWC Observatory, we searched for extended gamma-ray emission around middle-aged pulsars and MSPs in HAWC's field-of-view. Through a stacking analysis comparing TeV flux models against a background-only hypothesis, we identified TeV halo-like emission around middle-aged pulsars at a significance level of $5.10\sigma$, but found no significant emission around MSPs. Our results imply that TeV halos may commonly exist around middle-aged pulsars, while MSPs are not as efficient in producing them.
Primary authors
Hongyi Wu
(University of Wisconsin-Madison)
Prof.
Ke Fang
(University of Wisconsin-Madison)
Dr
Sara Coutiño
(University of Wisconsin-Madison)
