The Structure and Signals of Neutron Stars, from Birth to Death

Session

Afternoon session - Parallel B

28 Mar 2014, 14:00

Conveners

Afternoon session - Parallel B

• Janusz Gil (University of Zielona Gora, Poland)

49. Multiwavelength properties of gamma-ray loud binaries.

Maria Chernyakova (D)

28/03/2014, 14:00

Gamma-ray-loud binary systems are a newly identified class of X-ray binaries detected up to TeV energies. They are peculiar examples of the HMXBs with the energy output dominated by emission in the high-energy (GeV) gamma-ray band. The nature of this peculiarity is not completely understood yet. At least one system, PSR B1259-63 is known to be powered by a young pulsar. The nature of the...

68. Radiation efficiencies of the pulsars (current update).

Sergey Zharikov

28/03/2014, 14:15

Eighteen pulsars with optical counterparts or with significantly deep upper limits on the optical luminosity are known currently. Using available multi-wavelength data for these pulsars we reanalyze the efficiencies of the conversion of the pulsar spin-down power into the observed non-thermal luminosity L in different spectral domains. This sample of pulsars confirms the non-monotonic...

73. Constraint of Pulsar Wind Properties from Induced Compton Scattering off Radio Pulses

Dr Shuta Tanaka (Institute for Cosmic Ray Research, The University of Tokyo)

28/03/2014, 14:30

Pulsar winds have problems in energy conversion and pair-cascade processes which determine the magnetization, the pair multiplicity and the bulk Lorentz factor of the wind. We study induced Compton scattering by a relativistically moving cold plasma to constrain wind properties by imposing that radio pulses from the pulsar itself are not scattered by the wind as was first studied by Wilson &...

84. g-modes in superfluid neutron stars

Elena Kantor

28/03/2014, 14:45

We show that, contrary to general belief, g-modes can exist in superfluid neutron stars. Unlike ordinary composition g-modes in cold non-superfluid neutron stars, these g-modes turn out to be very temperature-dependent and can have frequencies up to ~0.5 kHz. We analyze their properties and briefly discuss the ways they can be excited. Possible observational signatures of the proposed...

91. The first variable gamma-ray pulsar: challenging the models of high-energy magnetospheric emission

Massimiliano Razzano

28/03/2014, 15:00

Pulsar variability, including mode changes and intermittent behavior, is a powerful probe of neutron star magnetospheres and represents a challenge for current emission models. In the gamma-ray domain where the bulk of their spindown luminosity is radiated, however, pulsars were believed to be steady emitters on timescales longer than those needed for their detections. Surprisingly, Fermi...

5. Linkup of non-rotating neutron-star and outer-Schwarzschild metrics

Dr Lubos Neslusan (Astronomical Institute, Slovak Academy of Sciences)

28/03/2014, 15:15

Neutron stars (NSs) are the compact objects with the metrics detectably deviated from the flat spacetime. In the interior of every NS the metrics can be calculated from the model of its internal structure. In the surrounding empty space the metrics is described by the outer Schwarzschild solution (OSS) of Einstein field equations if a non-rotating NS is considered. In the linkup of both NS and...

147. Statistical measure of complexity in compact stars with global charge neutrality

Mr Rodrigo Souza (IAG - USP Sao Paulo)

28/03/2014, 15:30

Recently, it has been suggested that a critical electrical field arises during the gravitational collapse of massive stars leading to a vacuum polarization. This, in turn, leads to the necessity of a reexamination of the gravito-electrodynamical properties of compact stars of the class of neutron stars. Rotondo, Rueda, Ruffini and Xue claim to have proved the impossibility of local charge...