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We used 15 GHz multi-epoch Very Long Baseline Array (VLBA) polarization sensitive observations of 484 sources within a time interval 1996--2016 from the MOJAVE program, and also from the NRAO data archive. We have analyzed the linear…

High Energy Astrophysical Phenomena · Physics 2017-12-11 A. B. Pushkarev , Y. Y. Kovalev , M. L. Lister , T. Savolainen , M. F. Aller , H. D. Aller , M. A. Hodge

From the very early days of Particle Physics, both experimental and theoretical studies on proton-proton collisions had occupied the center-stage of attention for very simple and obvious reasons. And this intense interest seems now to be at…

High Energy Physics - Phenomenology · Physics 2012-01-23 P. Guptaroy , Goutam Sau , S. Bhattacharyya

We perform a parton level study of angular correlations, in higher dimensional black hole events scenarios at the LHC. We start by discussing some features of the angular spectrum in the high energy limit using the geometrical optics…

High Energy Physics - Phenomenology · Physics 2012-03-26 Marco O. P. Sampaio

Fast Radio Bursts (FRBs) are short-timescale transients of extragalactic origin. The number of detected FRBs has grown dramatically since their serendipitous discovery from archival data. Some FRBs have also been seen to repeat. The…

High Energy Astrophysical Phenomena · Physics 2024-05-21 Pavan Uttarkar , Ryan M. Shannon , Marcus E. Lower , Pravir Kumar , Danny C. Price , A. T. Deller , K. Gourdji

The report is dedicated to the preparation of the new experiment on the neutron radiative decay what is conducted for the last years. We started the experimental research of this neutron decay branch with the experiment conducted at ILL in…

Pulsar timing arrays probe isotropic stochastic gravitational wave (GW) backgrounds in the nanohertz band but are insensitive to its parity-violating component. Motivated by recent progress in pulsar polarization arrays, we study the…

General Relativity and Quantum Cosmology · Physics 2026-04-06 Qiuyue Liang , Kimihiro Nomura , Hidetoshi Omiya

We present the results from high-resolution observations carried out with the eMERLIN UK-array and the European VLBI network (EVN) for a sample of 15 FR0s, i.e. compact core-dominated radio sources associated with nearby early-type galaxies…

Astrophysics of Galaxies · Physics 2021-11-22 Ranieri D. Baldi , Gabriele Giovannini , Alessandro Capetti

Energetic X-ray radiations emitted from various accretion systems are widely considered to be produced by Comptonization in the hot corona. The corona and its interaction with the disc play an essential role in the evolution of the system…

High Energy Astrophysical Phenomena · Physics 2022-06-10 Xiao-lin Yang , Jian-cheng Wang , Chu-yuan Yang

SCUPOL, the polarimeter for SCUBA on the James Clerk Maxwell Telescope (JCMT), was used for polarization observations of 104 regions at 850 micron wavelength and 15 arcsec resolution in the mapping mode by Matthews et al. (2009). They…

Astrophysics of Galaxies · Physics 2025-08-22 Puja Porel

I review recent progress in the extraction of unpolarized parton distributions in the proton and in nuclei from a unified point of view that highlights how the interplay between high energy particle physics and lower energy nuclear physics…

High Energy Physics - Phenomenology · Physics 2016-02-10 Alberto Accardi

We use perturbed relativistic coupled-cluster (PRCC) theory to calculate the electric dipole polarizability of noble gas atoms Ar, Kr, Xe and Rn. We also provide a detailed description of the nonlinear terms in the PRCC theory and consider…

Atomic Physics · Physics 2012-12-19 S. Chattopadhyay , B. K. Mani , D. Angom

Polarized neutron scattering experiments were performed on mixed compound CeRh0.6Co0.4In5 to clarify the nature of the low-temperature ordered states. Three nonequivalent Bragg peaks, characterized by the wave vectors of q_h ~…

Strongly Correlated Electrons · Physics 2008-05-14 M. Yokoyama , N. Oyama , H. Amitsuka , S. Oinuma , I. Kawasaki , K. Tenya , M. Matsuura , K. Hirota

Based on previous publications exploring pseudo-complex General Relativity (pc-GR) we present a selection of observable consequences of pc-GR and possible ways to experimentally access them. Whenever possible we compare the results to…

General Relativity and Quantum Cosmology · Physics 2013-04-26 Thomas Schönenbach , Gunther Caspar , Peter O. Hess , Thomas Boller , Andreas Müller , Mirko Schäfer , Walter Greiner

I discuss the physics of polarization in models with early reionization. For sufficiently high optical depth to recombination the polarization is boosted on large scales while it is suppressed on smaller scales. New peaks appear in the…

Astrophysics · Physics 2016-08-30 Matias Zaldarriaga

The polarization of the optical afterglow (AG) of Gamma-Ray Bursts (GRBs) has only been measured in a few instances at various times after the GRB. In all cases except the best measured one (GRB 030329) the observed polarization and its…

Astrophysics · Physics 2007-05-23 Shlomo Dado , Arnon Dar , A. De Rujula

We present results from the first 2+1 and 3+1 simulations of the collapse of rotating stellar iron cores in general relativity employing a finite-temperature equation of state and an approximate treatment of deleptonization during collapse.…

The high-energy emission ($400$ keV $- 2$ MeV) of Cygnus X-1 --the most well-studied Galactic black hole-- was recently found to be strongly polarized. The origin of this radiation is still unknown. In this work, we suggest that it is the…

High Energy Astrophysical Phenomena · Physics 2016-02-17 Florencia L. Vieyro , Gustavo E. Romero , Sylvain Chaty

We study the polarization-polarization and polarization-temperature correlations in standard adiabatic scenarios for structure formation. Temperature anisotropies due to gravitational potential wells and oscillations in the…

Astrophysics · Physics 2009-10-22 David Coulson , Robert G. Crittenden , Neil Turok

We discuss the analysis of polarization experiments with particular emphasis on those that measure the Stokes parameters on a ring on the sky. We discuss the ability of these experiments to separate the $E$ and $B$ contributions to the…

Astrophysics · Physics 2009-10-30 Matias Zaldarriaga

Synchrotron emission polarization is very sensitive to the magnetic field configuration. Recently, polarization of synchrotron emission with a mixed (SM) magnetic field in Gamma-ray burst (GRB) afterglow phase had been developed. Here, we…

High Energy Astrophysical Phenomena · Physics 2021-05-05 Mi-Xiang Lan , Xue-Feng Wu , Zi-Gao Dai