PPT-Challenges in the Measurement of Neutron Star Radii

Cole Miller University of Maryland 1 Collaborators Romain Artigue Didier Barret Sudip Bhattacharyya Stratos Boutloukos Novarah Kazmi Fred Lamb Ka Ho Lo Outline. Varun Bhalerao. California Institute of Technology. Collaborators: F. Harrison, S. . Kulkarni. , Marten van . Kerkwijk. , and others. Weighing in on Neutron Stars. Varun Bhalerao. Why?. How?. What?. Classes of objects. the Supernova Engine. Bounce Masses. Mass at Explosion. Fallback . Neutron Star Masses. Observations of neutron star binaries provide a growing list of neutron star mass estimates.. Current observations predict a range of NS masses from 1.0 to >2 solar masses.. The Pulsar Search Collaboratory. Questions We Will Answer. What is a . pulsar. ?. Why do astronomers study pulsars?. What is the . PSC. ?. How can . you. get involved?. What is a pulsar?. A pulsar is a . Stars: . Insights . into their Formation. , Evolution & . Structure from their. Masses and Radii. Feryal Ozel. University of Arizona. In collaboration with T. . Guver. , M. . Baubock. , L. . Camarota. . Ana Becerril-Reyes, Sanjib S. Gupta and Hendrik Schatz. . Comparison between the two compilations of electron capture rates:. We start by comparing the EC rates at the lowest values of temperature and density (T9=0.01 and Log. By. . Kraml E.. 09.01.2017. A Neutron-Star. (not . actually. ). The Sun. Source: NASA. A Neutron-Star. Comparison. Diameter:. Mass. :. Density. :. Diameter:. Mass. :. Density. :. 1.4 x 10^6 km. 2 x 10^30 kg. Stars:. . The Discovery of . Pulsars. . Can. We Detect . Neutron Stars?. As noted earlier, . this . seems. very unlikely:. . they are small (asteroid-sized. ). even the nearest is likely to be . N. eutron . Stars Foreseen. . Supernova . End Products?. When a . supernova. goes off, we can speculate that:. The star might blow itself to smithereens, . scattering all its material into space and leaving . progenitors a simple mass relationship?. John . Bray. PhD candidate. Supervisor Dr. J.J Eldridge. Crab nebula : . Image Credit : . NASA, ESA, J. Hester, A. Loll (ASU). Outline. The evidence for `kicks’. Cole Miller. University of Maryland. 1. Collaborators: . Romain. . Artigue. , Didier . Barret. ,. Sudip. Bhattacharyya, . Stratos. . Boutloukos. , . Novarah. . Kazmi. , Fred Lamb, . Ka. Ho Lo. Measuring stellar radii. and . GRBs structure. Alessandro Drago. University. of Ferrara. Outline. What. do . we. . learn. from the . existence. of . stars. of 2 . M. s. . ?. Are . hyperons. . excluded. ? . Are . hybrid. and . astrophysical . observations. David E. . Á. lvarez. . C. .. Sept 2013. S. . Kubis. , D. . Blaschke. and T. . Klaehn. The Modern Physics of Compact Stars and Relativistic Gravity. Outline. Introduction to neutron stars. Frederick Seward. ABSTRACT. Neutron stars are predicted to be stable over the mass range ≈ 0.1 to ≈ 3M. ⊙. . At 1.4 M. ⊙. , 98% of the mass is in a core with . supernuclear. density and 1-2 % forms a thin crust and atmosphere . As mass decreases, the fraction of mass in the crust increases until at . Frederick Seward. ABSTRACT. Neutron stars are predicted to be stable over the mass range ≈ 0.1 to ≈ 3M. ⊙. . At 1.4 M. ⊙. , 98% of the mass is in a core with . supernuclear. density and 1-2 % forms a thin crust and atmosphere . As mass...