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相关论文: The population of highly magnetized neutron stars

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In this contribution we study the effects of strong magnetic fields on the particle population of neutron stars with hyperon degrees of freedom in their composition. The star matter is described by a multi-component model with parameterized…

太阳与恒星天体物理 · 物理学 2014-09-04 R. O. Gomes , V. Dexheimer , C. A. Z. Vasconcellos

In this work, we study in detail the effects of many-body forces on the equation of state and the structure of magnetic neutron stars. The stellar matter is described within a relativistic mean field formalism that takes into account…

核理论 · 物理学 2017-11-29 R. O. Gomes , B. Franzon , V. Dexheimer , S. Schramm

We investigate the effects of strong magnetic fields on the properties of hyperon stars. The matter is described by a hadronic model with parametric coupling. The matter is considered to be at zero temperature, charge neutral,…

核理论 · 物理学 2013-07-30 R. O. Gomes , V. Dexheimer , C. A. Z. Vasconcellos

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…

核理论 · 物理学 2012-09-26 L. L. Lopes , D. P. Menezes

We study the problem of neutron star composition in the presence of a strong magnetic field. The effects of the anomalous magnetic moments of both nucleons and electrons are investigated in relativistic mean field calculations for a…

天体物理学 · 物理学 2009-11-07 G. Mao , V. N. Kondratyev , A. Iwamoto , Z. Li , X. Wu , W. Greiner , I. N. Mikhailov

In this work, we study the effects of different magnetic field configurations in neutron stars described by a many-body forces formalism (MBF model). The MBF model is a relativistic mean field formalism that takes into account many-body…

核理论 · 物理学 2017-09-06 R. O. Gomes , B. Franzon , V. Dexheimer , S. Schramm , C. A. Z. Vasconcellos

We systematically study the properties of pure nucleonic and hyperonic magnetic stars using a density-dependent relativistic mean field (DD-RMF) equations of state. We explore several parameter sets and hyperon coupling schemes within the…

核理论 · 物理学 2021-09-09 I. A. Rather , Usuf Rahaman , V. Dexheimer , A. A. Usmani , S. K. Patra

We investigate the effects of strong magnetic fields upon the gross properties of neutron and protoneutron stars. In our calculations, the neutron star matter was approximated by the pure neutron matter. Using the lowest order constrained…

太阳与恒星天体物理 · 物理学 2015-06-11 Gholam Hossein Bordbar , Zeinab Rezaei

We study the effects of strong magnetic fields on the neutron star structure. If the interior field of a star is on the same order of the surface field currently observed, the influences of the magnetic field on the star mass and radius are…

天体物理学 · 物理学 2014-10-13 Guangjun Mao , Akira Iwamoto , Zhuxia Li

We investigate the effects of strong magnetic fields on the equation of state of dense stellar neutrino-free and neutrino-trapped matter. Relativistic nuclear models both with constant couplings (NLW) and with density dependent parameters…

核理论 · 物理学 2010-04-22 A. Rabhi , C. Providencia

Neutron stars are the endpoint of the life of intermediate mass stars and posses in their cores matter in the most extreme conditions in the universe. Besides their extremes of temperature (found in proto-neutron stars) and densities,…

高能天体物理现象 · 物理学 2018-06-07 R. O. Gomes , S. Schramm , V. Dexheimer

It has been clear for some time now that super-critical surface magnetic fields, exceeding 4 x 10^13 G, exist on a subset of neutron stars. These magnetars may harbor interior fields many orders of magnitude larger, potentially reaching…

高能天体物理现象 · 物理学 2015-03-16 Farbod Kamiab , Avery E. Broderick , Niayesh Afshordi

We investigate the effects of very strong magnetic fields upon the equation of state of dense bayonic matter in which hyperons are present. In the presence of a magnetic field, the equation of state above nuclear density is significantly…

天体物理学 · 物理学 2009-11-07 A. E. Broderick , M. Prakash , J. M. Lattimer

The properties of the extremely strong magnetic fields of neutron stars affect in a unique way their evolution and the associated phenomenology. Due to the lack of constraints from direct observations, our understanding of the magnetic…

高能天体物理现象 · 物理学 2015-06-22 Riccardo Ciolfi

Our main goal in this work is to study magnetized neutron stars by using a fully general$-$relativity approach presented in the LORENE package\footnote{http://www.lorene.obspm.fr}. Here we have adopted a non-uniform magnetic field profile…

太阳与恒星天体物理 · 物理学 2016-08-30 Bruno Franzon , Stefan Schramm

It is understood that strong magnetic fields affect the structure of neutron stars. Nevertheless, many calculations for magnetized neutron stars are still being performed using symmetric solutions of Einstein's equations. In this conference…

高能天体物理现象 · 物理学 2017-06-28 V. Dexheimer , B. Franzon , S. Schramm

In this work, we study the effects of magnetic fields and rotation on the structure and composition of proto-neutron stars (PNS's). A hadronic chiral SU(3) model is applied to cold neutron stars (NS) and proto-neutron stars with trapped…

高能天体物理现象 · 物理学 2016-08-17 B. Franzon , V. Dexheimer , S. Schramm

Neutron stars with strong magnetic fields are considered in the framework of f(R) gravity. In order to describe dense matter in magnetic field, the model with baryon octet interacting through $\sigma$$\rho$$\omega$-fields is used. The…

广义相对论与量子宇宙学 · 物理学 2015-06-19 Artyom V. Astashenok , Salvatore Capozziello , Sergei D. Odintsov

We investigate the effects of strong magnetic fields on the equation of state of warm stellar matter as it may occur in a protoneutron star. Both neutrino free and neutrino trapped matter at a fixed entropy per baryon are analyzed. A…

核理论 · 物理学 2015-05-28 A. Rabhi , P. K. Panda , C. Providência

We study the effect of a strong magnetic field on the properties of neutron stars with a quark-hadron phase transition. It is shown that the magnetic field prevents the appearance of a quark phase, enhances the leptonic fraction, decreases…

核理论 · 物理学 2014-11-20 A. Rabhi , H. Pais , P. K. Panda , C. Providencia
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