A5082677698- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Radio Astronomy Observations and Technology
- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Solar and Space Plasma Dynamics
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Disaster Management and Resilience
- Global Peace and Security Dynamics
- Geomagnetism and Paleomagnetism Studies
- NMR spectroscopy and applications
- Noncommutative and Quantum Gravity Theories
- Disaster Response and Management
- Geophysics and Gravity Measurements
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Cryospheric studies and observations
- Scientific Research and Discoveries
The Ohio State University
2010-2020
Clark Atlanta University
2018-2019
University of Alaska Anchorage
2018-2019
The University of Adelaide
2018-2019
The University of Texas at Arlington
2018-2019
Friedrich-Alexander-Universität Erlangen-Nürnberg
2019
University of Geneva
2018
Providence College
2018
Southern University and Agricultural and Mechanical College
2018
Johannes Gutenberg University Mainz
2016-2017
The ANtarctic Impulsive Transient Antenna (ANITA) NASA long-duration balloon payload completed its fourth flight in December 2016, after 28 days of time. ANITA is sensitive to impulsive broadband radio emission from interactions ultrahigh-energy neutrinos polar ice (Askaryan emission). We present the results two separate blind analyses searching for signals Askaryan data ANITA. more analysis, with a better expected limit, has background estimate ${0.64}_{\ensuremath{-}0.45}^{+0.69}$ and an...
We report results of the first comprehensive, high resolution study deflections UHECRs using a realistic model Galactic magnetic field and extending to sufficiently low rigidities, R = E/Z 10^18 V, describe Fe in UHE energy range or mixed composition reported by Pierre Auger Collaboration at observed dipole anisotropy. use Jansson-Farrar (JF12) model, which has both large scale coherent structured random components, determine for fifteen rigidities from 10^18.0 10^20.0 L_coh 30 pc 100 pc....
A Monte Carlo simulation program for the radio detection of Ultra High Energy (UHE) neutrino interactions in Antarctic ice as viewed by Impulsive Transient Antenna (ANITA) is described this article. The program, icemc, provides an input spectrum UHE neutrinos, parametrization Askaryan radiation generated their interaction ice, and propagation through air to a simulated model third fourth ANITA flights. This paper overview icemc simulation, descriptions physics models used electronics...
We present the results of a study that simulates trajectories ultra-high energy cosmic rays from Centaurus A to Earth. The arrival directions are characterized assess whether Cen can be identified as source based on observing departures isotropy. analyze separately particles originating central engine well north and south radio lobes complex. Simulations performed for particle rigidities E/Z = 2 EV 100 EV, thus covering possibility primary heavy Fe nuclei with energies exceeding 50 EeV....
A good model of the Galactic magnetic field is crucial for estimating contribution in dark matter and CMB-cosmology studies, determining sources UHECRs, also modeling transport CRs since halo provides an important escape route by diffusion along its lines. We briefly review observational foundations Jansson-Farrar 2012 large scale structure GMF, underscoring robust evidence a N-to-S directed, spiraling field. New results on lensing effect GMF UHECRs are presented, displaying multiple images...
A good model of the Galactic magnetic field is crucial for estimating contribution in dark matter and CMB-cosmology studies, determining sources UHECRs, also modeling transport CRs since halo provides an important escape route by diffusion along its lines. We briefly review observational foundations Jansson-Farrar 2012 large scale structure GMF, underscoring robust evidence a N-to-S directed, spiraling field. New results on lensing effect GMF UHECRs are presented, displaying multiple images...
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The SAIS Review Interviews Professor Marvin Ott Michael Sutherland (bio), Devan Kerley and (bio) REVIEW: Can you briefly take us through your background in government how got to SAIS? MARVIN OTT: When I came SAIS, the prevailing orientation of institution was realpolitik, it embedded way everything approached. Over years that focus became more variegated, but taught think about foreign policy very much tradition, I’ve never lost that. One reason is area world I’m interested in, East Asia,...