Abstract In this paper, we discuss the impact of following laboratory experiments and astrophysical observation neutron stars (NSs) on their equation state (EoS): (a) new measurement skin thickness 208 Pb, <?CDATA ${R}_{\mathrm{skin}}^{208}=0.29\pm 0.07$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msubsup> <mml:mrow> <mml:mi>R</mml:mi> </mml:mrow> <mml:mi>skin</mml:mi> <mml:mn>208</mml:mn> </mml:msubsup> <mml:mo>=</mml:mo> <mml:mn>0.29</mml:mn>...

Observations of neutron stars (NSs) by the LIGO-Virgo and NICER collaborations have provided reasonably precise measurements their various macroscopic properties. In this paper, we employ a Bayesian framework to combine them place improved joint constraints on properties NS equation state (EoS). We use hybrid EoS formulation that employs parabolic expansion-based nuclear empirical parameterization around saturation density augmented generic 3-segment piecewise polytrope model at higher...

We use gravitational wave (GW) and electromagnetic (EM) observations of GW170817 to constrain the extent pressure anisotropy in it. While it is quite likely that inside a neutron star mostly isotropic, certain physical processes or characteristics, such as phase transitions nuclear matter presence strong magnetic fields, can introduce anisotropy. In this work, we show anisotropic stars reduce their tidal deformability substantially. For anisotropy-pressure model Bowers Liang couple...

We show that the odds of mass-gap (secondary) object in GW190814 being a neutron star (NS) improve if one allows for stiff high-density equation state (EoS) or large spin. Since its mass is $\in (2.50,2.67) M_{\odot}$, establishing true nature will make it either heaviest NS lightest black hole (BH), and can have far-reaching implications on EoS compact formation channels. When limiting oneself to hypothesis, we deduce secondary's properties by using Bayesian framework with hybrid...

We develop a method for implementing proposal on utilizing knowledge of neutron star (NS) equation state (EoS) inferring the Hubble constant from population binary (BNS) mergers. This is useful in exploiting BNSs as standard sirens when their redshifts are not available. Gravitational wave (GW) signals compact object binaries provide direct measurement luminosity distances, but redshifts. Unlike past, here we employ realistic EoS parametrization Bayesian framework to simultaneously measure...

Abstract The measurement of the macroscopic properties a neutron star, whether in binary or an isolated system, provides us with key opportunity to place stringent constraint on its equation state. In this paper, we perform Bayesian model selection wide variety star equations state using multi-messenger observations. particular, (i) use mass and tidal deformability measurements from two merger events, GW170817 GW190425; (ii) simultaneous mass–radius PSR J0030+0451 J0740+6620 by NICER...

Despite its elegance, the theory of General Relativity (GR) is subject to experimental, observational, and theoretical scrutiny arrive at tighter constraints or an alternative, more preferred theory. In alternative gravity theories, macroscopic properties neutron stars, such as mass, radius, tidal deformability, etc. are modified. This creates a degeneracy between uncertainties in equation state (EOS) since assuming different EOS can be mimicked by changing gravity. We formulate hierarchical...

BACKGROUND: Evaluating plateletpheresis (PPH) and repeat community whole‐blood (RWB) donors' responses to donation incentive programs is essential for developing effective donor retention programs. STUDY DESIGN AND METHODS: Using data from a 1998 anonymous questionnaire sent 92,581 US blood donors, the prevalence of unreported deferrable risks, screening test reactivity, response incentives were compared in RWB PPH donors by use weighted chi‐square tests logistic regression analyses....

Instead of parameterizing the pressure-density relation a neutron star (NS), one can parameterize its macroscopic properties such as mass ($M$), radius ($R$), and dimensionless tidal deformability ($\Lambda$) to infer equation state (EoS) combining electromagnetic gravitational wave (GW) observations. We present new method $R(M)$ $\Lambda(M)$ relations, which approximate candidate EoSs with accuracy better than 5\% for all masses span broad region $M-R-\Lambda$ plane. Using this we combine...

In the late inspiral phase, gravitational waves from binary neutron star mergers carry imprint of equation state due to tidally deformed structure components. If stars contain solid crusts, then their shear modulus can affect deformability and, thereby, modify emitted signal. We investigate effect realistic equations (EOSs) crustal matter, with a model for stellar crust in fully general relativistic framework. This allows us systematically study deviations that are expected fluid models....

Influence Maximization, which selects a set of k users (called seed set) from social network to maximize the expected number influenced influence spread), is key algorithmic problem in analysis. In this paper, we give recent studies on maximization algorithms. The main goal survey provide and future research opportunities. We taxonomy algorithms with comparative theoretical This paper provides analysis based algorithm design perspective also performance existing

With ongoing advancements in nuclear theory and experimentation, together with a growing body of neutron star (NS) observations, wealth information on the equation state (EOS) for matter at extreme densities has become accessible. Here, we utilize hybrid EOS formulation that combines an empirical parameterization centered around saturation density generic three-segment piecewise polytrope model higher densities. We incorporate data derived from chiral effective field ($\chi$EFT),...

In this work, we investigate the impact of possibility a small, subsolar mass compact star, such as recently reported central object HESS J1731-347, on equation state (EOS) neutron stars. We have used hybrid approach to nuclear EOS developed where matter around saturation density is described by parametric expansion in terms empirical parameters and represented an agnostic way at higher using piecewise polytropes. incorporated inputs provided latest skin measurement experiments from PREX-II...

Gravitational waves (GWs) from binary neutron stars (BNSs) are expected to be accompanied by electromagnetic (EM) emissions, which help identify the host galaxy. Since GW events directly measure their luminosity distances, joint GW-EM observations BNSs study cosmology, particularly Hubble constant, unaffected cosmic distance ladder systematics. However, detecting EM counterparts BNS mergers is not always possible. Additionally, tidal deformations of components offer insights into star (NS)...

We develop a method for implementing proposal on utilizing knowledge of neutron star (NS) equation state (EoS) inferring the Hubble constant from population binary (BNS) mergers. This is useful in exploiting BNSs as standard sirens when their redshifts are not available. Gravitational wave (GW) signals compact object binaries provide direct measurement luminosity distances, but redshifts. Unlike past, here we employ realistic EoS parametrization Bayesian framework to simultaneously measure...

Instead of parameterizing the pressure-density relation a neutron star (NS), one can parameterize its macroscopic properties such as mass ($M$), radius ($R$), and dimensionless tidal deformability ($Λ$) to infer equation state (EoS) combining electromagnetic gravitational wave (GW) observations. We present new method $R(M)$ $Λ(M)$ relations, which approximate candidate EoSs with accuracy better than 5\% for all masses span broad region $M-R-Λ$ plane. Using this we combine $M-Λ$ measurement...

In the last two decades, many development projects have been undertaken by different GOs and NGOs in diverse areas of world with expectation that they will simultaneously address challenges declining rural livelihoods biodiversity. Caritas Bangladesh, a leading national non-profit organization, has implemented several social welfare community since 1970s. Accordingly, noble project 2019, namely: Improving extremely poor people promoting green energy biodiversity aspect climate change...

Figure 1.(left to right) Copper haide-based supramolecules encapsulating molecules of ferrocene, P 4 S 3 , and As .Inorganic core a supramolecule based on copper triflate.

We construct an efficient parameterization of the pure neutron-matter equation state (EoS) that incorporates uncertainties from both chiral effective field theory ($\chi$EFT) and phenomenological potential calculations. This yields a family EoSs including extending forms based purely on these two In combination with agnostic inner core EoS, this is used in Bayesian inference pipeline to obtain constraints e os parameters using multi-messenger observations neutron stars. specifically...

Despite its elegance, the theory of General Relativity is subject to experimental, observational, and theoretical scrutiny arrive at tighter constraints or an alternative, more preferred theory. In alternative gravity theories, macroscopic properties neutron stars, such as mass, radius, tidal deformability, etc. are modified. This creates a degeneracy between uncertainties in equation state (EoS) since assuming different EoS can be mimicked by changing gravity. We formulate hierarchical...

We report structural, magnetic and dielectric properties of the Pr 0.45 Ca 0.55 Mn 0.95 V 0.05 O 3 (S1) 0.90 0.10 (S2) polycrystalline compounds, prepared by solid state reaction method. Pnma space group orthorhombic crystal structure is confirmed Reitveld refinement XRD data. Magnetic study reveals a multiple-phase-separated metastable behavior with presence charge ordered phase followed spin-glass at low temperature region. However, increasing vanadium content, ordering antiferromagnetic...