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We evaluate accurate low-field/low-temperature asymptotics of the thermal conductivity perpendicular to magnetic field for one-band and two-band s-wave superconductors using Keldysh-Usadel formalism. We show that heat transport in this…

Superconductivity · Physics 2015-05-20 A. A. Golubov , A. E. Koshelev

There is increasing evidence that some heating mechanism in addition to gravitational shock heating has been important for the hot gas inside clusters and groups of galaxies, as indicated by their observed X-ray scaling properties. While…

Astrophysics · Physics 2009-11-06 Susumu Inoue , Shin Sasaki

The effect of temperature on the crust-core transition of a magnetar is studied. The thermodynamical spinodals are used to calculate the transition region within a relativistic mean-field approach for the equation of state. Magnetic fields…

Nuclear Theory · Physics 2021-09-09 Márcio Ferreira , Aziz Rabhi , Constança Providência

r-mode astroseismology provides a unique way to study the internal composition of compact stars. Due to their precise timing, recycled millisecond radio pulsars present a particularly promising class of sources. Although their thermal…

High Energy Astrophysical Phenomena · Physics 2017-01-25 Kai Schwenzer , Tuğba Boztepe , Tolga Güver , Eda Vurgun

We calculate the specific heat and susceptibility of rare-earth magnetic superconductors in the context of the Ginzburg-Landau theory. The specific heat and susceptibility are calculated both at the coexistence phase of antiferromagnetism…

Superconductivity · Physics 2021-09-30 Preeti Suman Dash , Salila Das , Prabir K. Mukherjee

Most studies of correlations between X-ray and optical properties of galaxy clusters have used the largest samples of data available, regardless of the morphological types of clusters included. Given the increasing evidence that morphology…

Astrophysics · Physics 2009-10-28 Christina M. Bird , Richard F. Mushotzky , Christopher A. Metzler

We use a statistically significant set of measurements to show that the field-aligned electron heat flux $q_\parallel$ in the solar wind at 1 AU is consistent with the Spitzer-H\"{a}rm collisional heat flux $q_{sh}$ for temperature gradient…

Solar and Stellar Astrophysics · Physics 2015-06-15 S. D. Bale , M. Pulupa , C. Salem , C. H. K. Chen , E. Quataert

When a superconducting ring encloses a magnetic flux that is not an integer multiple of half the quantum of flux, a voltage arises in the direction perpendicular to the temperature gradient. This effect is entirely due to thermal…

Superconductivity · Physics 2015-04-28 Jorge Berger

We have obtained mid-infrared spectra of nine cool-core galaxy clusters with the Infrared Spectrograph aboard the Spitzer Space Telescope. X-ray, ultraviolet and optical observations have demonstrated that each of these clusters hosts a…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-25 G. E. de Messières , R. W. O'Connell , B. R. McNamara , M. Donahue , P. E. J. Nulsen , G. M. Voit , M. W. Wise

Clusters of galaxies, filled with hot magnetized plasma, are the largest bound objects in existence and an important touchstone in understanding the formation of structures in our Universe. In such clusters, thermal conduction follows field…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Christoph Pfrommer , L. Jonathan Dursi

The ab-plane thermal conductivity $\kappa$ of single-crystalline hexagonal MgB_2 has been measured as a function of magnetic field H with orientations both parallel and perpendicular to the c-axis and at temperatures between 0.5 and 300 K.…

Superconductivity · Physics 2009-11-07 A. V. Sologubenko , J. Jun , S. M. Kazakov , J. Karpinski , H. R. Ott

Inspired by the excess soft X-ray emission recently detected in Green Pea galaxies, we model the soft X-ray emission (0.5 - 2.0 keV) of hot gas from star cluster winds. By combining individual star clusters, we estimate the soft X-ray…

Although commonly employed by X-ray astronomers, maximum likelihood estimators are known to be biased. In this paper we investigate the bias associated to the measure of the temperature from an X-ray thermal spectrum. We show that, in the…

Astrophysics · Physics 2009-08-13 A. Leccardi , S. Molendi

We review some of the ways that X-ray observations provide unique information on radio galaxies. Thermal bremsstrahlung X-ray emission provides detailed data on ambient densities and temperatures. These parameters in turn can be used for…

Astrophysics · Physics 2007-05-23 D. E. Harris

We analyze the effect of magnetic field in superconducting neutron-star cores on the chemical heating of millisecond pulsars (MSPs). We argue that the magnetic field destroys proton superconductivity in some volume fraction of the stellar…

High Energy Astrophysical Phenomena · Physics 2021-10-20 Elena M. Kantor , Mikhail E. Gusakov

In a classical ideal plasma, a magnetic field is known to reduce the heat conductivity perpendicular to the field whereas it does not alter the one along the field. Here we show that, in strongly correlated plasmas that are observed at high…

Plasma Physics · Physics 2015-12-16 Torben Ott , Michael Bonitz , Zoltan Donko

The magnetic skyrmion is a nanoscale topological object characterized by the winding of the magnetic moments, appearing in magnetic materials with broken inversion symmetry. Because of its low current threshold for driving, the skyrmions…

Mesoscale and Nanoscale Physics · Physics 2019-10-30 Ryo Iguchi , Shinya Kasai , Kazushige Koshikawa , Norimichi Chinone , Shinsuke Suzuki , Ken-ichi Uchida

Compact stars made of quark matter rather than confined hadronic matter, are expected to form a color superconductor. This superconductor ought to be threaded with rotational vortex lines, within which the star's interior magnetic field is…

High Energy Astrophysical Phenomena · Physics 2010-04-06 Brian Niebergal , Rachid Ouyed , Rodrigo Negreiros , Fridolin Weber

We study the interplay of conductive and radiative heat transfer (RHT) in planar geometries and predict that temperature gradients induced by radiation can play a significant role on the behavior of RHT with respect to gap sizes, depending…

Mesoscale and Nanoscale Physics · Physics 2016-09-28 Riccardo Messina , Weiliang Jin , Alejandro W. Rodriguez

Thermal X-ray emission from rotation-powered pulsars is believed to originate from localized "hotspots" on the stellar surface occurring where large-scale currents from the magnetosphere return to heat the atmosphere. Lightcurve modeling…

High Energy Astrophysical Phenomena · Physics 2019-11-13 Will Lockhart , Samuel E. Gralla , Feryal Özel , Dimitrios Psaltis
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