All articles tagged with #fast telescope
Chinese astronomers discovered a rare binary system, PSR J1928+1815, where a pulsar orbits inside another star, providing new insights into stellar evolution and mass exchange in binary systems, using the world's largest radio telescope, FAST.
China's FAST telescope, also known as the "China Sky Eye," has unveiled a comprehensive catalog of neutral hydrogen sources beyond our galaxy. The three-year project, called FASHI, utilized the world's largest single-dish radio telescope to detect faint and weak neutral hydrogen galaxies, providing more reliable and complete data quality.
China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has discovered 76 dim and sporadic pulsars, including the faintest known pulsars to date. The team also confirmed that rotating radio transients (RRATs) are intermittent pulsars. The intermittent pulsars discovered by FAST account for approximately 12% of the total number of pulsars discovered in the survey. The study provides insights into the dense remnants of dead stars and their radiation characteristics.
Astronomers using the FAST telescope have discovered "dwarf pulses" from the pulsar PSR B2111+46, representing a unique radiation state with a rare reversed spectrum. These weak, narrow pulses provide insights into the mysteries of pulsar radiation processes and the extreme plasma conditions within a pulsar's magnetosphere. The observations of PSR B2111+46 revealed dozens of unusually weak pulses during nulling periods, which have been named "dwarf pulses." This new emission state, different from ordinary pulsar radiation, is produced by one or a few "raindrops" of particles generated in a fragile gap of the pulsar. Further study of these dwarf pulses could uncover unknown aspects of pulsar radiation and reveal the extreme plasma state within the pulsar magnetosphere.