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Charged particles at the crust of compact stars may be ejected and accelerated by the electric field generated due to the rotation of the magnetized star. For neutron or hybrid stars, the negatively charged particles are usually electrons,…

High Energy Astrophysical Phenomena · Physics 2020-10-28 Debojoti Kuzur , Rupamoy Bhattacharyya , Ritam Mallick

Because of the quantum fluid properties of a neutron star core's neutrons and protons, its magnetic field is expected to be coupled strongly to its spin. This predicts a simple evolution of the surface-field of such stars as they spin down…

Astrophysics · Physics 2007-05-23 M. Ruderman

Gravitational redshifts of neutron stars have a theoretical upper limit of z=0.62. Also, it is generally believed that neutron stars have magnetic fields on the order of ten to the twelfth to ten to the thirteenth G. A previously predicted…

General Relativity and Quantum Cosmology · Physics 2007-05-23 David Apsel

In this talk, after briefly reviewing some historical remarks concerning strange stars, the achievements in physics and dynamical behavior of strange stars are discussed. Especially, various observational effects in distinguishing strange…

Astrophysics · Physics 2007-05-23 T. Lu

We reexamine the surface composition of strange stars. Strange quark stars are hypothetical compact stars which could exist if strange quark matter was absolutely stable. It is widely accepted that they are characterized by an enormous…

Nuclear Theory · Physics 2007-05-23 Prashanth Jaikumar , Sanjay Reddy , Andrew W. Steiner

We investigate the stability of strange quark matter and the properties of the corresponding strange stars, within a wide range of quark mass scaling. The calculation shows that the resulting maximum mass always lies between 1.5 solor mass…

Solar and Stellar Astrophysics · Physics 2013-05-15 Ang Li , Ren-Xin Xu , Ju-Fu Lu

The conventionally separated treatments for strangelets and strange stars are now unified with a more comprehensive theoretical description for objects ranging from strangelets to strange stars. After constraining the model parameter…

Nuclear Theory · Physics 2016-01-29 Cheng-Jun Xia , Guang-Xiong Peng , En-Guang Zhao , Shan-Gui Zhou

We propose a unified picture of high magnetic field radio pulsars and magnetars by arguing that they are all rotating high-field neutron stars, but have different orientations of their magnetic axes with respective to their rotation axes.…

Astrophysics · Physics 2009-10-31 Bing Zhang , Alice K. Harding

Extremely powerful magnetic fields are contained inside neutron stars. Their effect is to deform the shape of the star, leading to the emission of continuous gravitational waves. The magnetic deformation of neutron stars depends on the…

High Energy Astrophysical Phenomena · Physics 2021-10-13 J. Soldateschi , N. Bucciantini

Neutron stars are one of the most exotic objects in the universe and a unique laboratory to study the nuclear matter above the nuclear saturation density. In this work, we study the equation of state of the nuclear matter within a…

Nuclear Theory · Physics 2012-09-26 L. L. Lopes , D. P. Menezes

Pulsars are spinning neutron stars with very regular periods. These pulsars have, however, had instances where they exhibit a change in their periods. Older theories have shown that older pulsars have a tendency to skip and speed up. Newer…

High Energy Astrophysical Phenomena · Physics 2022-04-19 Clayton Miller

Magnetars are neutron stars with superstrong magnetic fields which can exceed 1e15 G. Some magnetars (the so-called soft gamma-repeaters) demonstrate occasionally very powerful processes of energy release, which result in exceptionally…

High Energy Astrophysical Phenomena · Physics 2024-09-18 D. G. Yakovlev

Neutron stars contain persistent, ordered magnetic fields that are the strongest known in the Universe. However, their magnetic fluxes are similar to those in magnetic A and B stars and white dwarfs, suggesting that flux conservation during…

Astrophysics · Physics 2009-11-13 Andreas Reisenegger

Members of the family of pulsar-like stars are distinguished by their different manifestations observed, i.e., radio pulsars, accretion-driven X-ray pulsars, X-ray bursts, anomalous X-ray pulsars/soft gamma-ray repeaters, compact center…

Astrophysics · Physics 2007-05-23 Renxin Xu

High magnetic fields are a distinguishing feature of neutron stars and the existence of sources (the soft gamma repeaters and the anomalous X-ray pulsars) hosting an ultra-magnetized neutron star (or magnetar) has been recognized in the…

Astrophysics of Galaxies · Physics 2012-07-11 Nanda Rea , Jose' A. Pons , Diego F. Torres , Roberto Turolla

In this brief review I summarize our basic knowledge about different types of isolated neutron stars. I discuss radio pulsars, central compact objects in supernova remnants, magnetars, near-by cooling neutron stars (aka the Magnificent…

High Energy Astrophysical Phenomena · Physics 2023-06-06 Sergei B. Popov

We study effects of the strange quark mass and of the QCD coupling constant in the MIT bag model of quark matter with lowest order quark-gluon interactions on the rapid rotation of strange stars. The influence of rotation on global…

Astrophysics · Physics 2007-05-23 D. Gondek-Rosinska , P. Haensel , J. L. Zdunik , E. Gourgoulhon

We discuss the possible appearance of strange exotic multi-quark states in the interior of neutron stars and signals for the existence of strange quark matter in the core of compact stars. We show how the in-medium properties of possible…

Astrophysics · Physics 2009-11-11 Irina Sagert , Mirjam Wietoska , Jurgen Schaffner-Bielich

This paper gives an overview of the properties of all possible equilibrium sequences of compact strange-matter stars with nuclear crusts, which range from strange stars to strange dwarfs. In contrast to their non-strange counterparts,…

Astrophysics · Physics 2007-05-23 F. Weber , Ch. Schaab , M. K. Weigel , N. K. Glendenning

The general statement that strange stars cool more rapidly than neutron stars is investigated in greater detail. It is found that the direct Urca process could be forbidden not only in neutron stars but also in strange stars. If so, strange…

Astrophysics · Physics 2008-11-26 Ch. Schaab , B. Hermann , F. Weber , M. K. Weigel