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pro vyhledávání: '"Kumari, Sangita"'
Autor:
Kumari, Sangita, Bhattacharyya, Bhaswati, Kansabanik, Devojyoti, Sharan, Rahul, Ghosh, Ankita, Roy, Jayanta
Eclipses of radio emission have been reported for ~ 58 spider millisecond pulsars (MSP), of which only around 19% have been extensively studied. Such studies at low frequencies are crucial for probing the properties of the eclipse medium, as eclipses
Externí odkaz:
http://arxiv.org/abs/2408.16460
In time-domain radio astronomy with arrays, voltages from individual antennas are added together with proper delay and fringe correction to form the beam in real-time. In order to achieve the correct phased addition of antenna voltages one has to als
Externí odkaz:
http://arxiv.org/abs/2407.06741
Autor:
Kumari, Sangita, Bhattacharyya, Bhaswati, Sharan, Rahul, Johnston, Simon, Weltevrede, Patrick, Stappers, Benjamin, Kansabanik, Devojyoti, Roy, Jayanta, Ghosh, Ankita
This study presents an orbital phase-dependent analysis of three black widow spider millisecond pulsars (BW MSPs), aiming to investigate the magnetic field within the eclipse environment. The ultra-wide-bandwidth low-frequency receiver (UWL) of the P
Externí odkaz:
http://arxiv.org/abs/2407.01024
This paper presents an investigation of spectral properties of 10 millisecond pulsars (MSPs) discovered by the uGMRT, observed from 2017-2023 using band 3 (300-500 MHz) and 4 (550-750 MHz) of uGMRT. For these MSPs, we have reported a range of spectra
Externí odkaz:
http://arxiv.org/abs/2406.03939
Autor:
Ghosh, Ankita, Bhattacharyya, Bhaswati, Lyne, Andrew, Kaplan, David L., Roy, Jayanta, Ray, Paul S., Stappers, Ben, Kumari, Sangita, Singh, Shubham, Sharan, Rahul
We present the timing solution for the 5.31-ms spider millisecond pulsar (MSP) J1242-4712, discovered with the GMRT. PSR J1242-4712 orbits a companion of minimum mass 0.08 M$_{\odot}$ with an orbital period of 7.7 hrs and occupies a relatively unexpl
Externí odkaz:
http://arxiv.org/abs/2403.02646
Autor:
Kumari, Sangita, Bhattacharyya, Bhaswati, Sharan, Rahul, Kansabanik, Devojyoti, Stappers, Benjamin, Roy, Jayanta
We present results from a long-term monitoring of frequency dependent eclipses of the radio emission from PSR J1544+4937 which is a ``black widow spider'' millisecond pulsar (MSP) in a compact binary system. The majority of such systems often exhibit
Externí odkaz:
http://arxiv.org/abs/2311.02071
Results from 11 years of radio timing for eclipsing black widow millisecond pulsar (MSP) binary, J1544+4937, is presented in this paper. We report a phase-connected timing model for this MSP, using observations with the Giant Metrewave Radio Telescop
Externí odkaz:
http://arxiv.org/abs/2211.14107
Autor:
Kumari, Sangita, Chouhan, Ajay, Siva Kumar Konathala, LN, Sharma, Om P., Ray, Siddharth S., Ray, Anjan, Khatri, Om P.
Publikováno v:
In Applied Surface Science 30 March 2022 579
Akademický článek
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Autor:
Kumari, Sangita, Pandit, Ankur, Patel, Lavkush, Ramsankaran, RAAJ, Sharma, Parmanand, Ramanathan, A.L.
Publikováno v:
In Polar Science December 2021 30