Super-Dense Matter at Super- Strong Magnetic Fields
نویسندگان
چکیده
Our Universe is full of regions where extreme physical conditions are realized. A most intriguing case is the super-dense core of neutron stars, some of which also have super-strong magnetic fields, hence called magnetars. In this paper we review the current understanding of the physical properties of the different phases of quark matter at very high densities in the presence of large magnetic fields. We also discuss how the Meissner instability produced at moderate densities by a pairing stress due to the medium neutrality and β -equilibrium constraints can lead to the spontaneous generation of a magnetic field.
منابع مشابه
The Super-alfvénic Model of Molecular Clouds: Predictions for Zeeman Splitting Measurements
We present synthetic OH Zeeman splitting measurements of a super-Alfvénic model of molecular clouds. We select dense cores from synthetic 13CO maps computed from the largest simulation to date of supersonic and super-Alfvénic turbulence. The synthetic Zeeman splitting measurements in the cores yield a relation between the magnetic field strength, B, and the column density, N, in good agreement ...
متن کاملLaunching of Jets by Propeller Mechanism
We carried out axisymmetric simulations of disk accretion to a rapidly rotating magnetized star in the “propeller” regime. Simulations show that propellers may be “weak” (with no outflows), and “strong” (with outflows). Investigation of the difference between these two regimes have shown that outflows appear only in the case where the “friction” between the disk and magnetosphere is sufficientl...
متن کاملThe Super-alfvénic Model of Molecular Clouds: Predictions for Mass-to-flux and Turbulent-to-magnetic Energy Ratios
Recent measurements of the Zeeman effect in dark-cloud cores provide important tests for theories of cloud dynamics and prestellar core formation. In this Letter we report results of simulated Zeeman measurements, based on radiative transfer calculations through a snapshot of a simulation of supersonic and super-Alfvénic turbulence. We have previously shown that the same simulation yields a rel...
متن کاملInfluence of polarization-averaged photon splitting on cyclotron lines in large-scale atmospheres with super-strong magnetic fields
We considered atmospheres comprised of two density regions of cyclotron resonant scattering and of almost no cyclotron resonant scattering where photon splitting occurs. Photon splitting occurs over a larger scale than cyclotron resonant scattering, since it occurs in a super-strong magnetic field regardless of the existence of a plasma. We investigated emergent spectra using the polarization-a...
متن کاملThe Stellar IMF from Turbulent Fragmentation
The morphology and kinematics of molecular clouds (MCs) are best explained as the consequence of super–sonic turbulence. Super–sonic turbulence fragments MCs into dense sheets, filaments and cores and large low density “voids”, via the action of highly radiative shocks. We refer to this process as turbulent fragmentation. In this work we derive the mass distribution of dense cores due to turbul...
متن کامل