output
20102026
most citedNew Hyperon Equations of State for Supernovae and Neutron Stars in Density-dependent Hadron Field Theory

250 citations

Showing astro-ph.HEShow all

18 papers · 1 filter

astro-ph.HE2025

Abundance Stratification in Type Iax SN 2020rea with TARDIS

Sohini Kayal, P. Gayatri, Mridweeka Singh +1

Using the 1D Monte Carlo-based radiative transfer code TARDIS, we investigate the spectral evolution of the Type Iax supernova (SN) 2020rea from -7 days before to +21 days after ma…

astro-ph.HE2025★ 10 cited

Exploring Fermionic Dark Matter Admixed Neutron Stars in the Light of Astrophysical Observations

Payaswinee Arvikar, Sakshi Gautam, Anagh Venneti +1

We studied the properties of dark matter admixed-neutron stars (DMANS), considering fermionic dark matter (DM) that interacts gravitationally with hadronic matter (HM). Using relat…

astro-ph.HE2023★ 15 cited

Noise analysis of the Indian Pulsar Timing Array data release I

Aman Srivastava, Shantanu Desai, Neel Kolhe +28

The Indian Pulsar Timing Array (InPTA) collaboration has recently made its first official data release (DR1) for a sample of 14 pulsars using 3.5 years of uGMRT observations. We pr…

astro-ph.HE2022★ 24 cited

Nanohertz Gravitational Wave Astronomy during the SKA Era: An InPTA perspective

Bhal Chandra Joshi, Achamveedu Gopakumar, Arul Pandian +34

Decades long monitoring of millisecond pulsars, which exhibit highly stable rotational periods, in pulsar timing array experiments is on the threshold of discovering nanohertz stoc…

astro-ph.HE2022

Quasi-stationary sequences of hyper massive neutron stars with exotic equations of state

Sanika Khadkikar, Chatrik Singh Mangat, Sarmistha Banik

In this work, we study the effect of differential rotation, finite temperature and strangeness on the quasi stationary sequences of hyper massive neutron stars (HMNS). We generate…

astro-ph.HE2021★ 35 cited

Evidence for profile changes in PSR J1713+0747 using the uGMRT

Jaikhomba Singha, Mayuresh P Surnis, Bhal Chandra Joshi +29

PSR J1713+0747 is one of the most precisely timed pulsars in the international pulsar timing array experiment. This pulsar showed an abrupt profile shape change between April 16, 2…

astro-ph.HE2021★ 32 cited

Equation of State table with hyperon and antikaon for supernova and neutron star merger

Tuhin Malik, Sarmistha Banik, Debades Bandyopadhyay

We develop a new equation of state (EoS) table involving thermal (anti)kaons, Bose-Einstein condensate of mesons and -hyperons for core-collapse supernova and neutron st…

astro-ph.HE2021★ 63 cited

Maximum mass of compact stars from gravitational wave events with finite-temperature equations of state

Sanika Khadkikar, Adriana R. Raduta, Micaela Oertel +1

We conjecture and verify a set of universal relations between global parameters of hot and fast-rotating compact stars, including a relation connecting the masses of the mass-shedd…

astro-ph.HE2021★ 23 cited

High Precision Measurements of Interstellar Dispersion Measure with the upgraded GMRT

M. A. Krishnakumar, P. K. Manoharan, Bhal Chandra Joshi +19

Pulsar radio emission undergoes dispersion due to the presence of free electrons in the interstellar medium (ISM). The dispersive delay in the arrival time of pulsar signal changes…

astro-ph.HE2020★ 14 cited

New equation of state involving Bose-Einstein condensate of antikaon for supernova and neutron star merger simulations

Tuhin Malik, Sarmistha Banik, Debades Bandyopadhyay

We compute a new equation of state table including Bose-Einstein condensate of mesons for core collapse supernova and neutron star merger simulations. Nuclei and interactin…

astro-ph.HE2020★ 8 cited

Signatures of strangeness in neutron star merger remnants

Krishna Prakash Nunna, Sarmistha Banik, Debarati Chatterjee

Neutron star (NS) mergers provide us with information rich in physics using multi-messenger astrophysical observations. One of the probable remnants of such a merger is a different…

astro-ph.HE2017★ 7 cited

Properties of rapidly rotating hot neutron stars with antikaon condensates at constant entropy per baryon

Neelam Dhanda Batra, Krishna Prakash Nunna, Sarmistha Banik

We consider a neutrino-free hot neutron star that contains antikaon condensates in its core and is at finite entropy per baryon. We find the equation of state for a range of entrop…

astro-ph.HE2017★ 14 cited

Critical mass, moment of inertia and universal relations of rapidly rotating neutron stars with exotic matter

S. S. Lenka, P. Char, S. Banik

We calculate moment of inertia of neutron star with different exotic constituents such as hyperons and (anti)kaon condensates and study its variation with mass and spin frequency.…

astro-ph.HE2016★ 20 cited

Neutron Star Physics in the Square Kilometer Array Era : An Indian Perspective

Sushan Konar, Manjari Bagchi, Debades Bandyopadhyay +14

It is an exceptionally opportune time for Astrophysics when a number of next-generation mega-instruments are poised to observe the universe across the entire electromagnetic spectr…

astro-ph.HE2015★ 28 cited

A Comparative study of hyperon equations of state in supernova simulations

Prasanta Char, Sarmistha Banik, Debades Bandyopadhyay

A comparative study of the hyperon equations of state of Banik, Hempel and Banyopadhyay (BHB) \citep{bhb} and \citet{shen11} (denoted as HShen ) for core collapse supernova…

astro-ph.HE2014★ 48 cited

Massive Neutron Stars with Antikaon Condensates in a Density Dependent Hadron Field Theory

Prasanta Char, Sarmistha Banik

The measurement of for PSR J1614-2230 and for PSR J0348+0432 puts a strong constraint on the neutron star equation of state and i…

astro-ph.HE2014★ 250 cited

New Hyperon Equations of State for Supernovae and Neutron Stars in Density-dependent Hadron Field Theory

Sarmistha Banik, Matthias Hempel, Debades Bandyopadhyay

We develop new hyperon equation of state (EoS) tables for core-collapse supernova simulations and neutron stars. These EoS tables are based on a density-dependent relativistic hadr…

astro-ph.HE2014★ 17 cited

Probing the metastability of protoneutron star with hyperon in core-collapse supernova

Sarmistha Banik

We investigate the role of hyperons in the dynamical collapse of a non-rotating massive star to a black hole(BH) using one dimensional general relativistic code. We follow t…