7 citations · 10 across the 12 of their papers we have counts for
12 papers
VLBI Astrometry of Magnetars
Takuya Akahori, Sujin Eie, Kei Amada +8
The origin of the strongest magnetic fields in the Universe, i.e., the origin of magnetars, is a longstanding question. An enhanced dynamo effect in an irregular supernova explosio…
The GMRT High-Resolution Southern Sky Survey for pulsars and transients -- VIII: Orbital Variability and the Evolution of a 1-Day He-WD Millisecond Pulsar J2101-4802
Ankita Ghosh, Bhaswati Bhattacharyya, David L. Kaplan +8
We present timing and orbital phase-resolved polarimetry of the millisecond pulsar (MSP) J21014802, having a spin period of 9.48~ms and dispersion measure (DM) $25.05\ \mathrm{p…
An Alternative Explanation for the Helium Star Pulsar Binary J19281815: The Most Heavyweight Black Widow System to Date
Hang Gong, Alexey Bobrick, Francisco Garzón +7
We present the results of deep near-infrared imaging of the recently discovered helium star pulsar binary J19281815 situated in the Galactic plane. Our observations did not achi…
Deciphering Profile Stability in Millisecond Pulsars: Timescales, Frequency Evolution, and Implications on Emission Mechanisms
Ankita Ghosh, Bhaswati Bhattacharyya, Rahul Sharan +3
Pulse profile stability in millisecond pulsars (MSPs) is a key factor in achieving high-precision timing essential for detecting nanohertz gravitational waves with Pulsar Timing Ar…
Exploring Unusual High-frequency Eclipses in MSP J1908+2105
Ankita Ghosh, Bhaswati Bhattacharyya, Sangita Kumari +3
This paper presents a comprehensive study of the eclipse properties of the spider millisecond pulsar (MSP) J19082105, using wide-band observations from the uGMRT and Parkes UWL.…
The Second Case of a Major Merger Triggering a Starburst in a Green Pea Galaxy
S. Purkayastha, N. Kanekar, S. Kumari +4
We have used the Karl G. Jansky Very Large Array (VLA) to map H{\sc i} 21\,cm emission from the Green Pea galaxy GP~J1148+2546 at , only the second measurement of t…
Unveiling Low-Frequency Eclipses in Spider MSPs using wideband GMRT Observations
Sangita Kumari, Bhaswati Bhattacharyya, Devojyoti Kansabanik +3
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…
In-field phasing at the upgraded GMRT
Sanjay Kudale, Jayanta Roy, Jayaram N. Chengalur +2
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…
Unveiling frequency-dependent eclipsing in spider millisecond pulsars using broadband polarization observations with the Parkes
Sangita Kumari, Bhaswati Bhattacharyya, Rahul Sharan +6
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 envir…
Flux Density Stability and Temporal Changes in the Spectra of Millisecond Pulsars using the GMRT
Rahul Sharan, Bhaswati Bhattacharyya, Sangita Kumari +2
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-…
The GMRT High-Resolution Southern Sky Survey for pulsars and transients -- VII: Timing of Spider MSP J1242-4712, A Bridge Between Redback and Black Widow Pulsars
Ankita Ghosh, Bhaswati Bhattacharyya, Andrew Lyne +7
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$_{\odo…
First systematic study reporting the changes in eclipse cut-off frequency for pulsar J1544+4937
Sangita Kumari, Bhaswati Bhattacharyya, Rahul Sharan +3
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)…