演講資訊

摘要：

The performance of the Fermi observatory enables the capability to study the radio-quiet gamma-ray pulsars. With the collection of more and more samples for radio-quiet pulsars, we can investigate the comparison between pulsars with and without radio emission. Among the studies in radio-quiet gamma-ray pulsars, astronomers currently find out 7 Geminga-like pulsars with both X-ray and gamma-ray pulsations. Just like the group members of this new-type pulsars all have their own unique features, we cannot conclude a consistent X-ray emission mechanism for them as well. PSR J2021+4026 is the most intriguing target in this group because it is the first known variable gamma-ray pulsar. With the long-term monitoring on its gamma-ray pulsation and the spin parameters, we conclude that the origin of the glitch is connected to the radiative mode change of its magnetosphere. Although astronomers have detected lots of radio-quiet pulsars now, none of them is a MSP. Due to the difficulties on the pulsed detection without the radio contemporaneous ephemeris, we still have an open question of whether there is any radio-quiet or radio-silent MSP. The discovery the black widow and redback systems provide us another thought to find out the candidates of radio-quiet MSPs. Multi-wavelength observations in studying unidentified Fermi objects (UFOs) may play a key role in corresponding searches, and such efforts can help us deeply clarify the emitting origin from a neutron star.