Anisotropic pressure in dense neutron matter under the presence of a strong magnetic field

Dense neutron matter with recently developed BSk19 and BSk21 Skyrme effective forces is considered in magnetic fields up to $10^{20}$ G at zero temperature. The breaking of the rotational symmetry by the magnetic field leads to the differentiation between the pressures along and perpendicular to the field direction which becomes significant in the fields $H>H_{th}\sim10^{18}$ G. The longitudinal pressure vanishes in the critical field $10^{18}<H_c\lesssim10^{19}$ G, resulting in the longitudinal instability of neutron matter. For the Skyrme force fitted to the stiffer underlying equation of state (BSk21 vs. BSk19) the threshold $H_{th}$ and critical $H_c$ magnetic fields become larger. The longitudinal and transverse pressures as well as the anisotropic equation of state of neutron matter are determined under the conditions relevant for the cores of magnetars.Comment: 7 pages, 3 figures; published online 7 December 201

Late Coarctation Presenters Suffer Chronic Hypertension Resisting to Medicine Treatment

Coarctation of the aorta (CoA) is a common Congenital Heart Disease (CHD) presenting with many symptoms and signs, in any age group. From its dramatic appearance as a part of Hypo plastic Left Heart Syndrome(HLHS), to early Congestive Heart Failure(CHF)in neonatal and early infantile age, to undetected Hypertension (HTN) in early or even late adulthood. The aim of this short review is to present this unique CHD, underline the presentation of late detected CoA, presenting with HTN and its impact in treating resistant HTN even after successful surgical treatment. Finally, the late onset HTN, following successful surgical treatment and its medicine management will be addressed. This difficult to control on mono or dual pharmacotherapy and the late complications of persistent uncontrolled HTN is the basic reason that these patients are a long-life follow-up population with important medical needs and increasing morbidity and mortality.</p