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X-ray spectra of quiescent low-mass X-ray binaries containing neutron stars can be fit with atmosphere models to constrain the mass and the radius. Mass-radius constraints can be used to place limits on the equation of state of dense…

High Energy Astrophysical Phenomena · Physics 2018-03-21 A. W. Shaw , C. O. Heinke , A. W. Steiner , S. Campana , H. N. Cohn , W. C. G. Ho , P. M. Lugger , M. Servillat

Searches for new physics in the coherent elastic neutrino-nucleus scattering require a precise knowledge of the neutrino flux and energy spectrum. In this paper we investigate the feasibility and the performances of an experiment based on a…

Instrumentation and Detectors · Physics 2019-08-27 C. Bellenghi , D. Chiesa , L. Di Noto , M. Pallavicini , E. Previtali , M. Vignati

We present Chandra ACIS-S sub-array observations of the quiescent neutron star low-mass X-ray binaries X7 and X5 in the globular cluster 47 Tuc. The large reduction in photon pile-up compared to previous deep exposures enables a substantial…

High Energy Astrophysical Phenomena · Physics 2016-11-15 Slavko Bogdanov , Craig O. Heinke , Feryal Özel , Tolga Güver

Proton radii of $^{12-19}$C densities derived from first accurate charge changing cross section measurements at 900$A$ MeV with a carbon target are reported. A thick neutron surface evolves from $\sim$ 0.5 fm in $^{15}$C to $\sim$ 1 fm in…

Background: The ground state neutron density of a medium mass nucleus contains fundamental nuclear structure information and is at present relatively poorly known. Purpose: We explore if parity violating elastic electron scattering can…

Nuclear Theory · Physics 2015-07-29 Z. Lin , C. J. Horowitz

Several experimental proposals expect to confirm the recent measurement of the coherent elastic neutrino-nucleus scattering (CEvNS). Motivated in particular by the next generation experiments of the COHERENT collaboration, we study their…

High Energy Physics - Phenomenology · Physics 2019-08-06 O. G. Miranda , G. Sanchez Garcia , O. Sanders

This paper presents the measurement of the neutron star (NS) radius using the thermal spectra from quiescent low-mass X-ray binaries (qLMXBs) inside globular clusters (GCs). Recent observations of NSs have presented evidence that cold ultra…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Sebastien Guillot , Mathieu Servillat , Natalie A. Webb , Robert E. Rutledge

We investigate the nuclear symmetry energy and neutron star properties using a Bayesian analysis based on constraints from different chiral effective field theory calculations using new energy density functionals that allow for large…

Nuclear Theory · Physics 2024-03-12 Yeunhwan Lim , Achim Schwenk

The second-order moment of the nuclear charge density($R^2_c$) is dominated by the mean square radius(msr) of the point proton distribution($R_p^2$), while the fourth-order moment($Q^4_c$) depends on the msr of the point neutron…

Nuclear Theory · Physics 2020-09-03 Haruki Kurasawa , Toshimi Suda , Toshio Suzuki

A nonlocal dispersive-optical-model analysis has been carried out for neutrons and protons in $^{48}$Ca. Elastic-scattering angular distributions, total and reaction cross sections, single-particle energies, the neutron and proton numbers,…

Nuclear Theory · Physics 2017-12-06 M. H. Mahzoon , M. C. Atkinson , R. J. Charity , W. H. Dickhoff

The equation of state (EOS) of dense matter has been a long-sought goal of nuclear physics. Equations of state generate unique mass versus radius (M-R) relations for neutron stars, the ultra-dense remnants of stellar evolution. In this…

Nuclear Theory · Physics 2015-06-05 Andrew W. Steiner , James M. Lattimer , Edward F. Brown

Using an explicitly isospin-dependent parametric Equation of State (EOS) for the core of neutron stars (NSs) within the Bayesian statistical approach, we infer the EOS parameters of super-dense neutron-rich nuclear matter from three sets of…

High Energy Astrophysical Phenomena · Physics 2020-08-07 Wen-Jie Xie , Bao-An Li

The angular distribution of the differential cross sections for proton elastic scattering from $^{132}$Sn at 196-210 MeV/nucleon was successfully measured over a momentum transfer range of 0.80 to 2.1 fm$^{-1}$. Using a relativistic impulse…

Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS) is a Standard Model process that, although predicted for decades, has only been detected recently by the COHERENT collaboration. Now that CE$\nu$NS has been discovered, it provides a…

High Energy Physics - Phenomenology · Physics 2018-11-14 Julien Billard , Joseph Johnston , Bradley J. Kavanagh

Motivated by the first observation of coherent-elastic neutrino-nucleus scattering at the COHERENT experiment, we confront the neutrino dipole portal giving rise to the transition of the standard model neutrinos to sterile neutrinos with…

High Energy Physics - Phenomenology · Physics 2021-08-31 Jihn E. Kim , Arnab Dasgupta , Sin Kyu Kang

Neutron star radii are primarily determined by the pressure of isospin asymmetric matter which is proportional to the slope of the nuclear symmetry energy. Available terrestrial laboratory data on the isospin diffusion in heavy-ion…

Nuclear Theory · Physics 2009-11-11 Bao-An Li , Andrew W. Steiner

We study quasinormal $f-$mode oscillations in neutron star(NS) interiors within the linearized General Relativistic formalism. We utilize approximately 9000 nuclear Equations of State (EOS) using spectral representation techniques,…

High Energy Astrophysical Phenomena · Physics 2024-04-30 Debanjan Guha Roy , Tuhin Malik , Swastik Bhattacharya , Sarmistha Banik

In the frameworks of hypothesis of practical constancy of the neutron resonance number in small fixed intervals of neutron energy, their most probable value was determined for nucleus mass region 230<A<244 from approximation of the reduced…

Nuclear Experiment · Physics 2011-05-31 A. M. Sukhovoj , V. A. Khitrov
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