The total intensity of pulse emission is shown in the upper panel. The left and right panels show theEnlargements of the pulsar. The panels show the pulse density changes. Credit: XAO
A research team led by Dr. Wang Shuangqiang from the XAO of the Chinese Academy of Sciences discovered a phenomenon in a black widow pulsar.
A low-mass companion star is found in black widow pulsar systems. They are characterized by emission from a radio station. Black widow pulsars are named after the black widow spiders, which eat the males after they mate. Black widow pulsars offer a great opportunity to investigate the characteristics of companion stars.
The researchers found that the emission of PSR J1720-0533 during the eclipse may be caused by the lensing of the sun.
The researchers found that the maximum magnification for the lens is 1.6 and that it's equivalent to a lens size of tens of kilometers. There is a link between the dispersion measurement and the lensing phenomenon.
The researchers found that the linear polarization of the emission disappeared before the dispersion measurement showed significant changes. There is strong evidence that there is a magnetic field in the companion.
Magnetic fields play an important role in black widow pulsars.
The researchers estimated the mass-loss rate of the companion to be 10-12 M/yr and speculated that it will be destroyed in 10 years.
The Astrophysical Journal Letters has more information about the Unusual Emission Variations Near the Eclipse of Black Widow Pulsar. There is a book titled "10847/2041-8213/ac365c".
The Astrophysical Journal Letters contains information.
There was a discovery in the black widow pulsar on December 30, 2021.
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