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51.
Supergalactic Structure of Energy-Angle Correlations
Jon Paul Lundquist, P. Sokolsky, 2020, objavljeni znanstveni prispevek na konferenci

Opis: Evidence for the supergalactic structure of multiplets (energy-angle correlations) has previously been shown using ultra-high energy cosmic ray (UHECR) data from Telescope Array (TA) with energies above 10^19 eV. The supergalactic deflection hypothesis (that UHECR sources and intervening magnetic fields are correlated) is measured by the all-sky behavior of the strength of intermediate-scale correlations. The multiplets are measured in spherical surface wedge bins of the field-of-view to account for uniform and random magnetic fields. The structure found is consistent with the previously published energy spectrum anisotropy results of TA and toy-model simulations of a supergalactic magnetic sheet. The 7 year data post-trial significance of this feature appearing by chance, on an isotropic sky, was found by Monte Carlo simulation to be ∼4σ. The analysis has now been applied to 10 years of data.
Ključne besede: Cosmic rays, UHECR, energy spectrum, magnetic deflection, large-scale structure, supergalactic, multiplets
Objavljeno v RUNG: 27.04.2020; Ogledov: 2827; Prenosov: 85
.pdf Celotno besedilo (1,66 MB)

52.
Search for Anisotropy in the Ultra High Energy Cosmic Ray Spectrum using the Telescope Array Surface Detector
R.U. Abbasi, Jon Paul Lundquist, 2017, drugi sestavni deli

Opis: The Telescope Array (TA) experiment is located in the western desert of Utah, USA, and observes ultra high energy cosmic rays (UHECRs) in the Northern hemisphere. At the highest energies, E>10~EeV, the shape of cosmic ray energy spectrum may carry an imprint of the source density distribution along the line of sight different in different directions of the sky. In this study, we search for such directional variations in the shape of the energy spectrum using events observed with the Telescope Array's surface detector. We divide the TA field of view into two nearly equal-exposure regions: the "on-source" region which we define as ±30∘ of the supergalactic plane containing mostly nearby structures, and the complementary "off-source" region where the sources are further away on average. We compare the UHECR spectra in these regions by fitting them to the broken power law and comparing the resulting parameters. We find that the off-source spectrum has an earlier break at highest energies. The chance probability to obtain such or larger difference in statistically equivalent distributions is estimated as 6.2±1.1×10−4 (3.2σ) by a Monte-Carlo simulation. The observed difference in spectra is in a reasonable quantitative agreement with a simplified model that assumes that the UHECR sources trace the galaxy distribution from the 2MRS catalogue, primary particles are protons and the magnetic deflections can be neglected.
Ključne besede: cosmic radiation: UHE, detector: surface, cosmic radiation: spectrum, cosmic radiation: energy spectrum, deflection: magnetic, numerical calculations: Monte Carlo, anisotropy
Objavljeno v RUNG: 27.04.2020; Ogledov: 3000; Prenosov: 98
.pdf Celotno besedilo (169,05 KB)

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Magnetic anisotropy of strontium ferrite nanoparticles
Cesar de Julian Fernandez, D. Mishra, M. Cabassi, M. Petrecca, M. Albino, M. Suara-Muzquiz, Petra Jenuš, A. Quesada, T. Schliesch, Blaž Belec, C. Sangregorio, F. Albertini, 2019, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: hexaferrite, nanoparticles, magnetic anisotropy, SPD
Objavljeno v RUNG: 04.06.2019; Ogledov: 3717; Prenosov: 0
Gradivo ima več datotek! Več...

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Synthesis of inorganic anisotropic nanoparticles
Blaž Belec, predavanje na tuji univerzi

Ključne besede: Magnetic nanoparticles, anisotropic nanoparticles, exchange coupled nanoparticles
Objavljeno v RUNG: 10.04.2019; Ogledov: 3503; Prenosov: 0
Gradivo ima več datotek! Več...

58.
Combining hard and soft magnetic phases by mechanical mixing
Blaž Belec, Cesar De Jilian Fernandez, Daniela Bertoni, druga izvedena dela

Ključne besede: Magnetic materials Magnetodipolar interactions lorenz microscopy
Objavljeno v RUNG: 12.02.2019; Ogledov: 3608; Prenosov: 0
Gradivo ima več datotek! Več...

59.
Seminar on Bimagnetic Composites
Blaž Belec, druge monografije in druga zaključena dela

Ključne besede: BI-MAGNETIC composites nanoparticles
Objavljeno v RUNG: 09.01.2019; Ogledov: 4342; Prenosov: 116
URL Povezava na celotno besedilo

60.
Synthesis and characterization of inorganic anisotropic nanoparticles
Belec Blaž, predavanje na tuji univerzi

Ključne besede: Nanoparticles anisotropic particles magnetic nanocompoistes topological insulator
Objavljeno v RUNG: 05.11.2018; Ogledov: 3598; Prenosov: 0
Gradivo ima več datotek! Več...

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