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May 11, 2022

Researchers investigate low emission mode in a pulsar

Mode changing is a manifestation of pulsar radiation variation. The study of mode changing is helpful to understand the emission characteristics and radiation mechanism of radio pulsars.Radio pulsars are known to exhibit significant emission variations in many different forms, such as the profile mode-changing. Study of these variations is important for unlocking the emission characteristics and the radiation mechanism ...
May 10, 2022

The origin of repeating fast radio bursts

The researchers proposed a new model to explain the periodic burst activity of FRBs and they considered that the interaction between a neutron star and its planet in a highly elliptic orbit.Recently, Dr. Abdusattar Kurban from the Xinjiang Astronomical Observatory (XAO), Chinese Academy of Sciences (CAS), along with his collaborators from XAO, Nanjing University, Purple mountain Observatory, and the Institute of High Energy...
May 09, 2022

Individual pulse study of a FAST-CRAFTS pulsar

Using the follow-up timing observations over a year, WEN Zhigang, an astronomer from the pulsar group at the Xinjiang Astronomical Observatory (XAO) of the Chinese Academy of Sciences (CAS), and his co-researchers have performed a detail...The Five-hundred-meter Aperture Spherical Radio Telescope (FAST) is the largest telescope ever built by far, which has discovered more than 200 pulsars. PSR J1631+1252 is an isolated normal pulsar with a rotational period of 0.310s disco...
Apr 20, 2022

The frequency-dependent periodic nulling and subpulse drifting properties in PSR J2048-1616

Using the archived observational data at 732, 1369 and 3100 MHz with the Parkes 64-m radio telescope, Dr. WEN Zhigang from Xinjiang Astronomical Observatory (XAO), Chinese Academy of Sciences (CAS), along with his co-researchers from XAO...Using the archived observational data at 732, 1369 and 3100 MHz with the Parkes 64-m radio telescope, Dr. WEN Zhigang from Xinjiang Astronomical Observatory (XAO), Chinese Academy of Sciences (CAS), along with his co-researchers from XAO...
Mar 21, 2022

Muztagh-ata Site: Excellent Condition With Low Level Water Vapor

The researchers calculated the atmospheric transmission in mid-infrared bands using the AM model. They confirmed the potential of Muztagh-ata station for IR observation and the hosting of the 1.9m telescope. This research has filled the...Precipitable water vapor (PWV) is an important parameter in the atmospheric column, which impacts the performance of an astronomical observatory in the research of the IR and millimeter bands.The water vapor is the most important absorbe...
Mar 17, 2022

Cosmic flashes pinpointed to a surprising location in space

Recently, the radio astronomy research group from Xinjiang Astronomical Observatory (XAO), Chinese Academy of Sciences operated the NanShan 26-m Radio Telescope (NSRT) to participate in a VLBI (very long baseline interferometry) campaign...Recently, the radio astronomy research group from Xinjiang Astronomical Observatory (XAO), Chinese Academy of Sciences operated the NanShan 26-m Radio Telescope (NSRT) to participate in a VLBI (very long baseline interferometry) campaign...

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