早期脈衝星風星雲的高分辨率無線電觀測

早期脈衝星風星雲的高分辨率無線電觀測


Public Seminar of Research Postgraduate Programmes Student:- High-Resolution Radio Observation of Young Pulsar Wind Nebulae 

Pulsar Wind Nebulae(PWNe) are believed to be a window for understanding the acceleration mechanism of high energy cosmic rays. The research done by the speaker focuses on observing radio emission of PWNe surrounding energetic pulsars. The aim is to search for small-scale structures to locate the cosmic ray acceleration sites. His team observed PWNe around PSR B1706-44 and the Vela pulsar in a high spatial resolution using the Australia Telescope Compact Array (ATCA). With a resolution 10”, the 6cm radio image of the PWN around PSR B1706-44 revealed a clover-like structure around the pulsar, confirming what was hinted by the previous observations. His new image shows some more detailed structures in the PWN. For the next step, the speaker will produce the 3cm radio image of PSR B1706-44 and derive the magnetic field in the PWN as well as compare the radio images with X-ray observation for more information about the acceleration mechanism in pulsar wind nebulae.
 
時間:2019.05.03(五) 15:00
地點:香港大學 莊月明物理樓522室
講者:Yihan LIU(香港大學)
語言:英語

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此活動由香港大學物理系主辦。