Abstract Details
| Name: Ayushi Shrivastava Affiliation: National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune Conference ID: ASI2025_268 Title : A Timing study of PSR J1840+1102: The Fastest GMRT-discovered Millisecond Pulsar Authors and Co-Authors : Ayushi Shrivastava 1, Yogesh Maan 1 Abstract Type : Poster Abstract Category : High Energy Phenomena, Fundamental Physics and Astronomy Abstract : Pulsars are highly magnetised rotating neutron stars which emit beams of electromagnetic radiation, detectable in radio band as pulsations. High precision studies are required to delve into properties of pulsars. Pulsar timing is one such study which helps in precise modeling of the intrinsic properties (such as spin period, spin period derivative, etc.) as well as the binary parameters and companion properties, if the pulsar is in a binary system. Once a reliable solution from pulsar timing is established, a pulsar can also be used to test gravitational theories, study Interstellar medium and also detect gravitational waves and the stochastic gravitational wave background using the Pulsar Timing Array (PTA) experiments. We will present an initial timing solution for the fastest GMRT-discovered pulsar: PSR J1840+1102, which has a spin period of 1.6 ms and an orbital period of 1.69 days. Various parameters have been fitted iteratively using different techniques and softwares. The timing residual of around 3 microseconds was achieved after fitting the data over a span of more than 1 year. In addition to precisely estimating several of the pulsar's intrinsic parameters, we have also explored and eliminated different types of binary companions based on mass and binary parameters constrained by the timing model. The high signal-to-noise ratio of the average profile, short spin period and precise pulse arrival times make PSR J1840+1102 a promising candidate for PTA. We will present various results obtained from our timing analysis as well as an assessment on this pulsar's suitability for inclusion in the PTA experiments. |