CITATION.bib

@article{singh_gmrt_2022,
	title = {The {GMRT} High Resolution Southern Sky Survey for Pulsars and Transients. {III}. Searching for Long-period Pulsars},
	volume = {934},
	rights = {All rights reserved},
	issn = {0004-637X},
	url = {https://doi.org/10.3847/1538-4357/ac7b91},
	doi = {10.3847/1538-4357/ac7b91},
	abstract = {Searching for periodic non-accelerated signals in the presence of ideal white noise using the fully phase-coherent fast-folding algorithm ({FFA}) is theoretically established as a more sensitive search method than the fast Fourier transform ({FFT}) search with incoherent harmonic summing. In this paper, we present a comparison of the performance of an {FFA} search implementation using {RIPTIDE} and an {FFT} search implementation using {PRESTO}, over a range of signal parameters with white noise and with real telescope noise from the Giant Meterwave Radio Telescope ({GMRT}) High Resolution Southern Sky ({GHRSS}) survey with the upgraded {GMRT} ({uGMRT}). We find that the {FFA} search with appropriate de-reddening of the time series performs better than the {FFT} search with spectral whitening for long-period pulsars under real {GHRSS} noise conditions. We describe an {FFA}-search pipeline implemented for the {GHRSS} survey looking for pulsars over a period of 0.1–100 s and up to a dispersion measure of 500 pc cm−3. We processed {GHRSS} survey data covering ∼1500 deg2 of the sky with this pipeline. We re-detected 43 known pulsars with a better signal-to-noise ratio in the {FFA} search than in the {FFT} search. We also report the discovery of two new pulsars, including a long-period pulsar with a short duty cycle, using this {FFA}-search pipeline. A population of long-period pulsars with periods of several seconds or higher could help constrain the pulsar death line.},
	pages = {138},
	number = {2},
	journaltitle = {The Astrophysical Journal},
	shortjournal = {{ApJ}},
	author = {Singh, S. and Roy, J. and Panda, U. and Bhattacharyya, B. and Morello, V. and Stappers, B. W. and Ray, P. S. and {McLaughlin}, M. A.},
	urldate = {2022-08-03},
	date = {2022-08},
	langid = {english},
	note = {Publisher: American Astronomical Society},
	file = {IOP Full Text PDF:/home/odin/Zotero/storage/5UBXCQ8R/Singh et al. - 2022 - The GMRT High Resolution Southern Sky Survey for P.pdf:application/pdf},
}