9.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR444 papers
- Institute for High Energy PhysicsES405 papers
- Stanford UniversityUS359 papers
- University of SouthamptonGB359 papers
- University College LondonGB358 papers
- University of MichiganUS356 papers
- Fermi National Accelerator LaboratoryUS350 papers
- University of ChicagoUS344 papers
- Ludwig-Maximilians-Universität MünchenDE323 papers
- University of Illinois Urbana-ChampaignUS315 papers
- Centro de Investigaciones Energéticas, Medioambientales y TecnológicasES312 papers
- The Ohio State UniversityUS305 papers
111 papers · 1 filter
Determination of neutron star radius from pulse profile modeling using profile likelihood
Vyaas Ramakrishnan, Shantanu Desai
In recent years, NICER data have been extensively used to determine neutron star masses and radii using pulse profile modeling. Pulse profile modeling is implemented with the {\tt…
Probing dipole and quadrupole anisotropy in Gamma-ray bursts from Swift dataset
Vedant Mokal, Shantanu Desai
Testing the validity of the cosmological principle's assumption of large-scale isotropy remains crucial for modern cosmology. We investigate the angular distributions of gamma-ray…
A MINOT-based Study of Gamma-ray emission from SPT-CL J2012-5649/Abell 3667
Siddhant Manna, Shantanu Desai
We present an analysis of the non-thermal properties of the merging galaxy cluster SPT-CL J2012-5649/Abell~3667 (, ) using the M…
Study of UV line and continuum variabilities in the Broadline Seyfert 1 Galaxy ESO 141-G55
Mayukh Pahari, Veda Samhita, Harikumar N. +2
We present the results from a 3-year-long Ultraviolet monitoring campaign of the broad line Seyfert 1 galaxy ESO 141-G55 using International Ultraviolet Explorer (IUE). By modellin…
Black hole-Neutron star distinction based on long-term MAXI and Swift study of 42 low mass X-ray binaries
Prakhar Maheshwari, Mayukh Pahari, Anish Sarkar +1
In this study, we analysed about 13 years of publicly available data from MAXI and Swift/BAT to examine the long-term source evolution of 42 transient low-mass X-ray binaries…
Spectro-timing origin of large amplitude X-ray variability in GRS 1915+105 using AstroSat/LAXPC and SXT
Shree Suman, Shuvajit Khatua, Vishal Jadoliya +2
The origin of the large-amplitude, quasi-periodic X-ray flux variations in several classes of the Galactic microquasar GRS~1915+105 remains unresolved. We address this issue throug…
Understanding coronal geometry in NGC 4593 using Fourier frequency-resolved covariance and time-lag spectral analysis
Shree Suman, Mayukh Pahari, Gulab Dewangan +1
Understanding disc-corona geometry through X-ray reverberation variability studies in Seyfert galaxies is crucial, yet our knowledge mostly relies on flux-averaged mean spectral an…
The Indian Pulsar Timing Array Data Release 2: II. Customised Single-Pulsar Noise Analysis and Noise Budget
K. Nobleson, Churchil Dwivedi, Shantanu Desai +33
We present the results of customised single-pulsar noise analysis of 27 millisecond pulsars from the second data release of the Indian Pulsar Timing Array (InPTA-DR2). We model var…
A test of Amati relation using HII galaxy distances
Rikiya Okazaki, Shantanu Desai
We use model-independent luminosity distances of 186 HII galaxy observations to address the circularity problem in the Amati relation for Gamma-ray Bursts (GRBs). For this purpose,…
Measuring accretion disc properties in the transitional millisecond pulsar PSR J1023+0038 using XMM-Newton, NuSTAR, NICER and Chandra
Vishal Jadoliya, Mayukh Pahari, Sudip Bhattacharyya +1
Whether the accretion disc in the X-ray high-mode of transitional millisecond pulsars (tMSP) reaches near the neutron star surface by penetrating the magnetosphere is a crucial que…
Search for spatial coincidences between galaxy mergers and Fermi-LAT 4FGL-DR4 sources
Siddhant Manna, Shantanu Desai
We present a systematic search for spatial association between a high confidence sample of 3,166 morphologically selected galaxy mergers drawn from the initial convolutional neural…
Search for Lorentz Invariance Violation with spectral lags of GRB 190114C using profile likelihood
Vyaas Ramakrishnan, Shantanu Desai
We search for Lorentz invariance violation (LIV) by re-analyzing the spectral lag data for GRB 190114C from Fermi-GBM using frequentist analysis, where we deal with the astrophysic…
Post-glitch Recovery and the Neutron Star Structure: The Vela Pulsar
Himanshu Grover, Erbil Gügercinoğlu, Bhal Chandra Joshi +4
We present a detailed analysis of the Vela pulsar's rotational behaviour using approximately 100 months of observational data spanning from September 2016 to January 2025, during w…
Search for spatial coincidence between magnetars and IceCube detected neutrinos
Fathima Shifa M., Shantanu Desai
We implement a search for spatial coincidence between high energy neutrinos detected by the IceCube neutrino detector (using the publicly available 10-year muon track data) and 37…
A Stacked Analysis of GeV Gamma-Ray Emission from SPT-SZ Galaxy Clusters with 16 Years of Fermi-LAT Data
Siddhant Manna, Shantanu Desai
We report a statistically significant detection of cumulative -ray emission from a stacked sample of SPT-SZ selected galaxy clusters using 16.4 years of data from the Fermi Gamm…
Constraints on Lorentz Invariance Violation from Gamma-ray Burst rest-frame spectral lags using Profile Likelihood
Vyaas Ramakrishnan, Shantanu Desai
We reanalyze the spectral lag data for 56 Gamma-Ray Bursts (GRBs) in the cosmological rest frame to search for Lorentz Invariance Violation (LIV) using frequentist inference. For t…
Search for transient gamma-ray emission from magnetar flares using Fermi-LAT
Vyaas Ramakrishnan, Shantanu Desai
We search for transient gamma-ray emission in the energy range from 0.1-10 GeV using data from the Fermi-LAT telescope in coincidence with magnetar flares. For our analysis, we loo…
Probing the origin of the extended flaring branch of Z-type X-ray binaries GX 340+0 and GX 5-1 using AstroSat
Tanmoy Dutta, Mayukh Pahari, Anish Sarkar +2
`Z' type neutron star low-mass X-ray binaries typically show a `Z'-like three-branched track in their hardness intensity diagram. However, a few such `Z' sources show an additional…
Constraint on Lorentz Invariance Violation for spectral lag transition in GRB 160625B using profile likelihood
Shantanu Desai, Shalini Ganguly
We reanalyze the spectral lag data for GRB 160625B using frequentist inference in order to constrain the energy scale () of Lorentz Invariance Violation (LIV). For this pur…
X-ray and Radio Campaign of the Z-source GX 340+0 II: the X-ray polarization in the normal branch
Yash Bhargava, Thomas D. Russell, Mason Ng +11
We present the first X-ray polarization measurement of the neutron star low-mass X-ray binary and Z-source, GX 3400, in the normal branch (NB) using a 200 ks observation with th…
Search for spatial coincidence between IceCube neutrinos and gamma-ray bright red dwarfs
Fathima Shifa M, Shantanu Desai
We search for a spatial coincidence between high energy neutrinos detected by the IceCube neutrino detector and ten red dwarfs which have been observed in gamma-rays. For our analy…
Effect of Magnetic Field on the Formation of Radiatively Inefficient Accretion Flow around Black Holes
Anish Sarkar, Mayukh Pahari
We study the effects of magnetic field in the formation of a radiatively inefficient accretion flow (RIAF) in the presence of Bremsstrahlung cooling, which facilitates the formatio…
Search for GeV gamma-ray emission from SPT-CL J2012-5649 with six years of DAMPE data
Siddhant Manna, Shantanu Desai
We search for gamma-ray emission from the galaxy cluster SPT-CL J2012-5649 in the energy range from 3 GeV to 1 TeV using the DArk Matter Particle Explorer (DAMPE) telescope. For ou…
Search for MeV Gamma-ray emission from TeV bright red dwarfs with COMPTEL
Niharika Shrivastava, Siddhant Manna, Shantanu Desai
The SHALON atmospheric Cherenkov telescope has detected very high energy gamma-ray emission at TeV energies from eight red dwarfs, namely, V388 Cas, V547 Cas, V780 Tau, V962 Tau, V…