Pulsars are the remnants of massive stars. Their rapid and precise rotation allows us to use them as tools to test many theories of physics. Pulsars come in many flavours; some are sporadic and only emit radio waves occasionally. This thesis uses the Canadian Hydrogen Mapping Experiment (CHIME) to study pulsars of all flavours. First, I developed a new processing pipeline so that we can fully utilise the capabilities of CHIME/Pulsar. Then, I create a technique, LuNfit, to characterise the single pulses of pulsars. I then apply LuNfit to 35 pulsars with a 477-hour CHIME/Pulsar observation campaign. Finally, I discovered a new long-period transient, CHIME J0630+25, with a period of 421 seconds.
This marks only the fourth object in this new class. Their nature remains unknown, but we speculate that CHIME J0630+25 is likely a white dwarf or a neutron star.
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2024-05-23T14:00:002024-05-23T16:00:00A study of sporadic pulsars and radio transients with the CHIME telescopeEvent Information:
Lay abstract:
Pulsars are the remnants of massive stars. Their rapid and precise rotation allows us to use them as tools to test many theories of physics. Pulsars come in many flavours; some are sporadic and only emit radio waves occasionally. This thesis uses the Canadian Hydrogen Mapping Experiment (CHIME) to study pulsars of all flavours. First, I developed a new processing pipeline so that we can fully utilise the capabilities of CHIME/Pulsar. Then, I create a technique, LuNfit, to characterise the single pulses of pulsars. I then apply LuNfit to 35 pulsars with a 477-hour CHIME/Pulsar observation campaign. Finally, I discovered a new long-period transient, CHIME J0630+25, with a period of 421 seconds.
This marks only the fourth object in this new class. Their nature remains unknown, but we speculate that CHIME J0630+25 is likely a white dwarf or a neutron star.Event Location:
Henn 309