837 citations · 2.1k across the 38 of their papers we have counts for
39 papers
A 350-MHz Green Bank Telescope Survey of Unassociated Fermi LAT Sources: Discovery and Timing of Ten Millisecond Pulsars
P. Bangale, B. Bhattacharyya, F. Camilo +18
We have searched for radio pulsations towards 49 Fermi Large Area Telescope (LAT) 1FGL Catalog -ray sources using the Green Bank Telescope at 350 MHz. We detected 18 millisecond…
Decade-long timing of four GMRT discovered millisecond pulsars
Shyam S. Sharma, Jayanta Roy, Bhaswati Bhattacharyya +1
The discovery and timing follow-up of millisecond pulsars (MSPs) are necessary not just for their usefulness in Pulsar Timing Arrays (PTAs) but also for investigating their own int…
The Third Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
David A. Smith, Philippe Bruel, Colin J. Clark +156
We present 294 pulsars found in GeV data from the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. Another 33 millisecond pulsars (MSPs) discovered in deep radio…
The GMRT High Resolution Southern Sky Survey for pulsars and transients -- VI: Discovery of nulling, localisation and timing of PSR J1244-4708
Shubham Singh, Jayanta Roy, Shyam Sunder +2
Many pulsars in the known population exhibit nulling, which is characterised by a sudden cessation and subsequent restoration of radio emission. In this work, we present the locali…
Timing of Pulsars in the Globular Cluster Omega Centauri
S. Dai, S. Johnston, M. Kerr +4
We present the timing of the first five millisecond pulsars discovered in the globular cluster Omega Centauri and the discovery of a pulsar with a spin period of 3.68 ms. With a ti…
The GMRT High Resolution Southern Sky Survey for pulsars and transients -- V: Localisation of two millisecond pulsars
Shyam Sunder, Jayanta Roy, Sanjay Kudale +3
The timing follow-up of newly discovered millisecond pulsars (MSPs) is hindered by the larger positional uncertainty (a few tens of arc-minutes) associated with the discovery. In t…
Neutron star mass estimates from gamma-ray eclipses in spider millisecond pulsar binaries
C. J. Clark, M. Kerr, E. D. Barr +26
Reliable neutron star mass measurements are key to determining the equation-of-state of cold nuclear matter, but these are rare. "Black Widows" and "Redbacks" are compact binaries…
Decade Long Timing Study of the Black Widow Millisecond Pulsar J1544+4937
Sangita Kumari, Bhaswati Bhattacharyya, Devojyoti Kansabanik +1
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 fo…
The GMRT High Resolution Southern Sky Survey for pulsars and transients IV: Discovery of 4 new pulsars with an FFA search
Shubham Singh, Jayanta Roy, Bhaswati Bhattacharyya +3
The fast Fourier transform (FFT) based periodicity search methods provide an efficient way to search for millisecond and binary pulsars but encounter significant sensitivity degrad…
The GMRT High Resolution Southern Sky Survey for pulsars and transients -- III: searching for long period pulsars
Shubham Singh, Jayanta Roy, Ujjwal Panda +5
Searching for periodic non-accelerated signals in presence of ideal white noise using the fully phase-coherent Fast Folding Algorithm (FFA) is theoretically established as a more s…
A Gamma-ray Pulsar Timing Array Constrains the Nanohertz Gravitational Wave Background
M. Ajello, W. B. Atwood, L. Baldini +129
After large galaxies merge, their central supermassive black holes are expected to form binary systems whose orbital motion generates a gravitational wave background (GWB) at nanoh…
Wide-band timing of GMRT discovered millisecond pulsars
Shyam S. Sharma, Jayanta Roy, Bhaswati Bhattacharyya +6
Modeling of frequency-dependent effects, contributed by the turbulence in the free electron density of interstellar plasma, is required to enable the detection of the expected impr…
Unraveling the Eclipse Mechanism of a Binary Millisecond Pulsar Using Broadband Radio Spectra
Devojyoti Kansabanik, Bhaswati Bhattacharyya, Jayanta Roy +1
The frequency dependent eclipses of the radio emission from millisecond pulsars (MSPs) in compact binary systems provide an opportunity to understand the eclipse mechanism and to d…
Radio Millisecond pulsars
Bhaswati Bhattacharyya, Jayanta Roy
The extreme timing stability of radio millisecond pulsars (MSPs) combined with their exotic environment and evolutionary history makes them excellent laboratories to probe matter i…
Discovery and timing of three millisecond pulsars in radio and gamma-rays with the GMRT and Fermi-LAT
B. Bhattacharyya, J. Roy, T. J. Johnson +14
We performed deep observations to search for radio pulsations in the directions of 375 unassociated Fermi Large Area Telescope (LAT) gamma-ray sources using the Giant Metrewave Rad…
Discovery of a Gamma-ray Black Widow Pulsar by GPU-accelerated Einstein@Home
L. Nieder, C. J. Clark, D. Kandel +39
We report the discovery of 1.97 ms period gamma-ray pulsations from the 75 minute orbital-period binary pulsar now named PSR J1653-0158. The associated Fermi Large Area Telescope g…
Evaluating Low-Frequency Pulsar Observations to Monitor Dispersion with the Giant Metrewave Radio Telescope
Megan L. Jones, Maura A. McLaughlin, Jayanta Roy +5
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) project has the primary goal of detecting and characterizing low-frequency gravitational waves through h…
Study of eclipses for Redback pulsar J12274853
Sanjay Kudale, Jayanta Roy, Bhaswati Bhattacharyya +2
We present a multi-frequency study of eclipse properties of a transitional redback millisecond pulsar J12274853 discovered in 2014 with the GMRT. Emission from this pulsar is ec…
The GMRT High Resolution Southern Sky Survey for pulsars and transients -II. New discoveries, timing and polarization properties
B. Bhattacharyya, J. Roy, B. W. Stappers +14
We have been conducting the GMRT High Resolution Southern Sky (GHRSS) survey for the last four years and have discovered 18 pulsars to date. The GHRSS survey is an off-Galactic-pla…
The Expanded Giant Metrewave Radio Telescope
N. N. Patra, N. Kanekar, J. N. Chengalur +22
With 30 antennas and a maximum baseline length of 25 km, the Giant Metrewave Radio Telescope (GMRT) is the premier low-frequency radio interferometer today. We have carried out a s…
Search for pulsars and transients with the GMRT
Bhaswati Bhattacharyya
This paper details on the discovery of 21 pulsars using the Giant Metrewave Radio Telescope (GMRT) from targeted (Fermi directed search) and blind surveys (GMRT High Resolution Sou…
The study of multi-frequency scattering of ten radio pulsars
Wojciech Lewandowski, Karolina Rozko, Jaroslaw Kijak +2
We present the results of the multi-frequency scatter time measurements for ten radio pulsars that were relatively less studied in this regard. The observations were performed usin…
The GMRT High Resolution Southern Sky Survey for pulsars and transients -I. Survey description and initial discoveries
Bhaswati Bhattacharyya, Sally Cooper, Mateusz Malenta +8
We are conducting a survey for pulsars and transients using the Giant Metrewave Radio Telescope (GMRT). The GMRT High Resolution Southern Sky (GHRSS) survey is an off-Galactic-plan…
Single-Source Gravitational Wave Limits from the J1713+0747 24-hr Global Campaign
T. Dolch, J. A. Ellis, S. Chatterjee +34
Dense, continuous pulsar timing observations over a 24-hr period provide a method for probing intermediate gravitational wave (GW) frequencies from 10 microhertz to 20 millihertz.…