Department of Physics

nuclear physics and astrophysics (theorectical)

I am a theoretical nuclear astrophysicist doing research on neutron rich dense matter, neutron star crusts, gravitational waves, neutrino interactions in supernova explosions, and laboratory measurements of nuclear properties important for astrophysics. My research projects include:

• Using gravitational wave observations of neutron stars to determine the equation of state (pressure versus density) of dense matter. See for example Gravitational Waves Shed Light on Dense Nuclear Matter.
• Large scale molecular dynamics simulations of the dense matter in neutron star crusts. See, for example, a Newscientist web article Star crust is 10 billion times stronger than steel or Nuclear pasta in neutron stars may be the strongest material in the universe, by Emily Conover in Science News.
• The Lead Radius Experiment (PREX) to measure the neutron radius of the heavy nucleus 208Pb via parity violating electron scattering. See for example a ScienceMag article Physicsits measure the skin of a nucleus.
• Organizing a number of conferences in nuclear physics, astrophysics and fundamental symmetries including: (1) Neutron star mergers for non-experts: GW170817 in the multi-messenger astronomy and FRIB eras, (2) Astro-Solids Dense Matter and Gravitational Waves, (3) The phases of dense matter, (4) Flavor observations with supernova neutrinos, (5) The r-process nucleosynthesis: connecting FRIB with the cosmos, (6) Neutron skins of nuclei, and (7) Symmetry Energy in the Context of New Radioactive Beam Facilities and Astrophysics

Weak radius of the proton, C. J. Horowitz, Phys. Lett. B 789, 675 (2019)

Elasticity of nuclear pasta, M. E. Caplan, A. S. Schneider, C. J. Horowitz, Phys. Rev. Lett. 121, 132701 (2018)

Rapid neutrino cooling in the neutron star MXB 1659-29, Edward F. Brown, Andrew Cumming, Farrukh J. Fattoyev, C. J. Horowitz, Dany Page, and Sanjay Reddy, Phys. Rev. Lett. 120, 182701 (2018)

Neutron skins and neutron stars in the multi-messenger era, F. J. Fattoyev, J. Piekarewicz, and C. J. Horowitz, Phys. Rev. Lett. 120, 172702 (2018)

Disordered nuclear pasta, magnetic field decay, and crust cooling in neutron stars, C. J. Horowitz, D. K. Berry, C. M. Briggs, M. E. Caplan, A. S. Schneider, Phys. Rev. Lett. 114, 031102 (2015)

The full weak charge density distribution of 48Ca from parity violating electron scattering, Z. Lin and C. J. Horowitz, Phys. Rev. C 92, 014313 (2015)

Nuclear Pasta Formation, A. S. Schneider, C. J. Horowitz, J. Hughto, and D. K. Berry, Phys. Rev. C 88, 065807 (2013)

Weak charge form factor and radius of 208Pb through parity violation in electron scattering”, C. J. Horowitz, et al., Phys. Rev. C 85 , 032501(R) (2012)

A New Equation of State for Astrophysical Simulations by G. Shen, C. J. Horowitz, and S. Teige, Phys. Rev. C 83, 035802 (2011)

The breaking strain of neutron star crust and gravitational waves by C. J. Horowitz, and Kai Kadau, Phys. Rev. Letters 102, 191102 (2009)

Neutrino-pasta scattering: the opacity of nonuniform neutron-rich matter by C. J. Horowitz, M. A. Perez-Garcia and J. Piekarewicz, Phys. Rev. C 69, 045804 (2004)

Weak magnetism for antineutrinos in supernovae by C. J. Horowitz, Phys. Rev. D 65, 043001 (2002)

Neutron Star Structure and the Neutron Radius of 208Pb by C. J. Horowitz and J. Piekarewicz, Phys. Rev. Lett. 86, 5647 (2001)

Parity Violating Measurements of Neutron Densities by C. J. Horowitz, S. J. Pollock, P. A. Souder, and R. Michaels, Phys. Rev. C 63, 025501 (2001)

nuclear physics and astrophysics (theorectical)

I am a theoretical nuclear astrophysicist doing research on neutron rich dense matter, neutron star crusts, gravitational waves, neutrino interactions in supernova explosions, and laboratory measurements of nuclear properties important for astrophysics. My research projects include:

• Using gravitational wave observations of neutron stars to determine the equation of state (pressure versus density) of dense matter. See for example Gravitational Waves Shed Light on Dense Nuclear Matter.
• Large scale molecular dynamics simulations of the dense matter in neutron star crusts. See, for example, a Newscientist web article Star crust is 10 billion times stronger than steel or Nuclear pasta in neutron stars may be the strongest material in the universe, by Emily Conover in Science News.
• The Lead Radius Experiment (PREX) to measure the neutron radius of the heavy nucleus 208Pb via parity violating electron scattering. See for example a ScienceMag article Physicsits measure the skin of a nucleus.
• Organizing a number of conferences in nuclear physics, astrophysics and fundamental symmetries including: (1) Neutron star mergers for non-experts: GW170817 in the multi-messenger astronomy and FRIB eras, (2) Astro-Solids Dense Matter and Gravitational Waves, (3) The phases of dense matter, (4) Flavor observations with supernova neutrinos, (5) The r-process nucleosynthesis: connecting FRIB with the cosmos, (6) Neutron skins of nuclei, and (7) Symmetry Energy in the Context of New Radioactive Beam Facilities and Astrophysics

Weak radius of the proton, C. J. Horowitz, Phys. Lett. B 789, 675 (2019)

Elasticity of nuclear pasta, M. E. Caplan, A. S. Schneider, C. J. Horowitz, Phys. Rev. Lett. 121, 132701 (2018)

Rapid neutrino cooling in the neutron star MXB 1659-29, Edward F. Brown, Andrew Cumming, Farrukh J. Fattoyev, C. J. Horowitz, Dany Page, and Sanjay Reddy, Phys. Rev. Lett. 120, 182701 (2018)

Neutron skins and neutron stars in the multi-messenger era, F. J. Fattoyev, J. Piekarewicz, and C. J. Horowitz, Phys. Rev. Lett. 120, 172702 (2018)

Disordered nuclear pasta, magnetic field decay, and crust cooling in neutron stars, C. J. Horowitz, D. K. Berry, C. M. Briggs, M. E. Caplan, A. S. Schneider, Phys. Rev. Lett. 114, 031102 (2015)

The full weak charge density distribution of 48Ca from parity violating electron scattering, Z. Lin and C. J. Horowitz, Phys. Rev. C 92, 014313 (2015)

Nuclear Pasta Formation, A. S. Schneider, C. J. Horowitz, J. Hughto, and D. K. Berry, Phys. Rev. C 88, 065807 (2013)

Weak charge form factor and radius of 208Pb through parity violation in electron scattering”, C. J. Horowitz, et al., Phys. Rev. C 85 , 032501(R) (2012)

A New Equation of State for Astrophysical Simulations by G. Shen, C. J. Horowitz, and S. Teige, Phys. Rev. C 83, 035802 (2011)

The breaking strain of neutron star crust and gravitational waves by C. J. Horowitz, and Kai Kadau, Phys. Rev. Letters 102, 191102 (2009)

Neutrino-pasta scattering: the opacity of nonuniform neutron-rich matter by C. J. Horowitz, M. A. Perez-Garcia and J. Piekarewicz, Phys. Rev. C 69, 045804 (2004)

Weak magnetism for antineutrinos in supernovae by C. J. Horowitz, Phys. Rev. D 65, 043001 (2002)

Neutron Star Structure and the Neutron Radius of 208Pb by C. J. Horowitz and J. Piekarewicz, Phys. Rev. Lett. 86, 5647 (2001)

Parity Violating Measurements of Neutron Densities by C. J. Horowitz, S. J. Pollock, P. A. Souder, and R. Michaels, Phys. Rev. C 63, 025501 (2001)