نتایج جستجو برای: weak gamma semihypergroup
تعداد نتایج: 261892 فیلتر نتایج به سال:
A statistical study on the light curves of all the short Gamma–Ray Bursts detected with the Gamma Ray Burst Monitor (GRBM) aboard BeppoSAX is reported. Evidence for a very weak and long duration component associated with these events in the two 1 s counters of the GRBM (40-700 keV and >100 keV) is found. It starts a few tens of seconds before the burst and continues for about 30 s after the bur...
Calculations of the rate of local Primordial Black Hole explosions often assume that the PBH’s can be highly concentrated into galaxies, thereby weakening the Page-Hawking limit on the cosmological density of PBH’s. But if the PBH’s are concentrated by a factor exceeding c/(H◦R◦) ≈ 4 × 10 , where R◦ = 8.5 kpc is the scale of the Milky Way, then the steady emission from the PBH’s in the halo wil...
Current neutrino detectors are approaching a sensitivity that allows one to detect Active Galactic Nuclei (AGN) in their high state. However, the expected signals might be too weak to result in a significant detection. One possibility to increase the detection chance is to focus the searches during states of high electromagnetic activity, especially in the very high energy (VHE) gamma-ray regim...
We investigate entanglement dynamics in continuously monitored open quantum systems featuring current-carrying nonequilibrium states. focus on a prototypical one-dimensional model of boundary-driven noninteracting fermions with monitoring the local density, whose average Lindblad features well-studied ballistic to diffusive crossover transport. Here we analyze fermionic negativity, mutual infor...
T cell rearranging gene gamma (TRG gamma) and T cell antigen receptor beta (TCR beta) chain gene rearrangement and transcription were studied in a series of patients with B-lineage acute lymphoblastic leukemia (ALL), in which the Ig H chain genes are rearranged and the surface phenotype reproduces the stages of normal pre-B maturation. For comparison, polyclonal T cells from peripheral blood of...
In this paper we introduce the notion of the fractional weak discrepancy of a poset, building on previous work on weak discrepancy in [5, 8, 9]. The fractional weak discrepancy wdF (P ) of a poset P = (V,≺) is the minimum nonnegative k for which there exists a function f : V → R satisfying (1) if a ≺ b then f(a) + 1 ≤ f(b) and (2) if a ‖ b then |f(a)− f(b)| ≤ k. We formulate the fractional weak...
MOJAVE is a long term VLBA program to investigate the kinematics and polarization evolution of a complete sample of 133 active galactic nuclei selected on the basis of compact, relativistically beamed jet emission at 15 GHz. By fitting to the apparent distributions of superluminal speed and jet luminosity, we can constrain the Lorentz factor distribution and intrinsic luminosity function of the...
The non thermal radiation observed from a handful of clusters of galaxies (CG) is the proof that particle acceleration occurs in the intra cluster medium (ICM). It is often believed that shock surfaces associated with either mergers of CG, or with the cosmological inflow of matter onto clusters during structure formation may be the sites for acceleration. We discuss here the effectiveness of sh...
Merging neutron stars offer an excellent laboratory for simultaneously studying strong-field gravity and matter in extreme environments. We establish the physical association of an electromagnetic counterpart (EM170817) with gravitational waves (GW170817) detected from merging neutron stars. By synthesizing a panchromatic data set, we demonstrate that merging neutron stars are a long-sought pro...
We continue our study in [16] of the Gamma limit of the Abelian Chern-Simons-Higgs energy Gcsh := 1 2 ∫ U |∇Aεuε| 2 + με 4 |curlAε − hex| |uε| + 1 ε2 |uε|(1− |uε|)dx on a bounded, simply connected, two dimensional domain where ε → 0 and με → μ ∈ [0,+∞]. Under the critical scaling, Gcsh ≈ |log ε|, we establish the Gamma limit when μ ∈ (0,+∞], and as a consequence we are able to compute the first...
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