Single-pulse behavior of rotating radio transient PSR J0628+0909 explored with FAST

Tomasz Nowakowski is a member of the physics.org community.

Astronomers used the Five-hundred-meter Aperture Spherical radio Telescope (FAST) to look at a rotating radio Transient. The results of the study were published in the monthly Notices of the Royal Astronomical Society.

There are a subclass of pulsars called RRATs. The first objects of this type were identified in 2006 as being intermittent in nature. The nature of these Transients is not known. It is assumed that ordinary radio pulsars can only be found through single pulse searches.

The Arecibo L-band Feedarray (PALFA) was used to discover the single pulse in the Pulsar survey. The source was classified as an RRAT six years later. The pulse period is 1.24 seconds and the dispersion measure is 88 pc/ cm 3 This pulsar has a burst rate of 141 per hour and a pulse width of less than a second.

A team of astronomy led by Jui-An Hsu of Peking University in Beijing, China, investigated a single pulse of the source in hopes of learning more about it. The L-band 19-beam receiver was used for this purpose.

We analyzed the half-hour FAST observation of PSR J0628+0909 with a bandwidth of 500 MHz. The researchers measured the properties of the source.

Three log normal components are needed to describe the peak flux distribution. When compared with previous results, the detected components are a lot weaker. The results show that the energy distributions are more complex with higher sensitivity.

The weak pulse signals were identified by the astronomer. This finding supports the idea that RRATs are in low-flux pulsars.

The correlation between waiting time and pulse energy is not very strong. It's possible that RRATs have different mechanisms to produce the strong single pulse. The event rate for a single pulse was calculated to be approximately 270 per hour.

The authors of the paper concluded that the strong emission of RRAT is not generated by the energy store-release mechanism.

The singlepulse behaviours of PSR J0628+0909 were explored by J A Hsu and his team.

Journal information: Monthly Notices of the Royal Astronomical Society

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