Related papers: Antarctic Surface Reflectivity Calculations and Me…

Antarctic Surface Reflectivity Measurements from the ANITA-3 and HiCal-1 Experiments

The primary science goal of the NASA-sponsored ANITA project is measurement of ultra-high energy neutrinos and cosmic rays, observed via radio-frequency signals resulting from a neutrino- or cosmic ray- interaction with terrestrial matter…

Instrumentation and Methods for Astrophysics · Physics 2017-06-22 P. W. Gorham , P. Allison , O. Banerjee , J. J. Beatty , K. Belov , D. Z. Besson , W. R. Binns , V. Bugaev , P. Cao , C. Chen , P. Chen , J. M. Clem , A. Connolly , B. Dailey , P. Dasgupta , C. Deaconu , L. Cremonesi , P. F. Dowkontt , B. D. Fox , J. Gordon , B. Hill , R. Hupe , M. H. Israel , P. Jain , J. Kowalski , J. Lam , J. G. Learned , K. M. Liewer , T. C. Liu , S. Matsuno , C. Miki , M. Mottram , K. Mulrey , J. Nam , R. J. Nichol , A. Novikov , E. Oberla , S. Prohira , B. F. Rauch , A. Romero-Wolf , B. Rotter , K. Ratzlaff , J. Russell , D. Saltzberg , D. Seckel , H. Schoorlemmer , S. Stafford , J. Stockham , M. Stockham , B. Strutt , K. Tatem , G. S. Varner , A. G. Vieregg , S. A. Wissel , F. Wu , R. Young

HiCal 2: An instrument designed for calibration of the ANITA experiment and for Antarctic surface reflectivity measurements

The NASA supported High-Altitude Calibration (HiCal)-2 instrument flew as a companion balloon to the ANITA-4 experiment in December 2016. Based on a HV discharge pulser producing radio-frequency (RF) calibration pulses, HiCal-2 comprised…

Instrumentation and Detectors · Physics 2020-09-21 S. Prohira , A. Novikov , D. Z. Besson , K. Ratzlaff , J. Stockham , M. Stockham , J. M. Clem , R. Young , P. W. Gorham , P. Allison , O. Banerjee , L. Batten , J. J. Beatty , K. Belov , W. R. Binns , V. Bugaev , P. Cao , C. Chen , P. Chen , A. Connolly , L. Cremonesi , B. Dailey , C. Deaconu , P. F. Dowkontt , B. D. Fox , J. Gordon , C. Hast , B. Hill , R. Hupe , M. H. Israel , J. Kowalski , J. Lam , J. G. Learned , K. M. Liewer , T. C. Liu , A. Ludwig , S. Matsuno , C. Miki , M. Mottram , K. Mulrey , J. Nam , R. J. Nichol , E. Oberla , B. F. Rauch , J. Roberts , A. Romero-Wolf , B. Rotter , J. Russell , D. Saltzberg , H. Schoorlemmer , D. Seckel , S. Stafford , B. Strutt , K. Tatem , G. S. Varner , A. G. Vieregg , S. A. Wissel , F. Wu

Antarctic Radio Frequency Albedo and Implications for Cosmic Ray Reconstruction

From an elevation of ~38 km, the balloon-borne ANtarctic Impulsive Transient Antenna (ANITA) is designed to detect the up-coming radio frequency (RF) signal resulting from a sub-surface neutrino-nucleon collision. Although no neutrinos have…

Instrumentation and Methods for Astrophysics · Physics 2014-10-08 D. Z. Besson , J. Stockham , M. Sullivan , P. Allison , S. W. Barwick , B. M. Baughman , J. J. Beatty , K. Belov , S. Bevan , W. R. Binns , C. Chen , P. Chen , J. M. Clem , A. Connolly , D. De Marco , P. F. Dowkontt , M. DuVernois , D. Goldstein , P. W. Gorham , E. W. Grashorn , B. Hill , S. Hoover , M. Huang , M. H. Israel , A. Javaid , J. Kowalski , J. Learned , K. M. Liewer , S. Matsuno , B. C. Mercurio , C. Miki , M. Mottram , J. Nam , C. J. Naudet , R. J. Nichol , K. Palladino , A. Romero-Wolf , L. Ruckman , D. Saltzberg , D. Seckel , R. Y. Shang , M. Stockham , G. S. Varner , A. G. Vieregg , Y. Wang

General Treatment of Reflection of Spherical Electromagnetic Waves from a Spherical Surface and its Implications for the ANITA Anomalous Polarity Events

We develop a general formalism to treat reflection of spherical electromagnetic waves from a spherical surface. Our main objective is interpretation of radio wave signals produced by cosmic ray interactions with Earth's atmosphere which are…

Classical Physics · Physics 2022-09-21 Paramita Dasgupta , Pankaj Jain

Experimental tests of sub-surface reflectors as an explanation for the ANITA anomalous events

The balloon-borne ANITA experiment is designed to detect ultra-high energy neutrinos via radio emissions produced by an in-ice shower. Although initially purposed for interactions within the Antarctic ice sheet, ANITA also demonstrated the…

High Energy Astrophysical Phenomena · Physics 2022-05-16 D. Smith , D. Z. Besson , C. Deaconu , S. Prohira , P. Allison , L. Batten , J. J. Beatty , W. R. Binns , V. Bugaev , P. Cao , C. Chen , P. Chen , J. M. Clem , A. Connolly , L. Cremonesi , P. Dasgupta , P. W. Gorham , M. H. Israel , T. C. Liu , A. Ludwig , S. Matsuno , C. Miki , J. Nam , A. Novikov , R. J. Nichol , E. Oberla , R. Prechelt , B. F. Rauch , J. Russell , D. Saltzberg , D. Seckel , G. S. Varner , A. G. Vieregg , S. A. Wissel

Reflections On the Anomalous ANITA Events: The Antarctic Subsurface as a Possible Explanation

The ANITA balloon experiment was designed to detect radio signals initiated by neutrinos and cosmic ray air showers. These signals are typically discriminated by the polarization and phase inversions of the radio signal. The reflected…

High Energy Astrophysical Phenomena · Physics 2020-05-22 Ian M. Shoemaker , Alexander Kusenko , Peter Kuipers Munneke , Andrew Romero-Wolf , Dustin M. Schroeder , Martin J. Siegert

Energy and Flux Measurements of Ultra-High Energy Cosmic Rays Observed During the First ANITA Flight

The first flight of the Antarctic Impulsive Transient Antenna (ANITA) experiment recorded 16 radio signals that were emitted by cosmic-ray induced air showers. For 14 of these events, this radiation was reflected from the ice. The dominant…

High Energy Astrophysical Phenomena · Physics 2016-02-09 H. Schoorlemmer , K. Belov , A. Romero-Wolf , D. García-Fernández , V. Bugaev , S. A. Wissel , P. Allison , J. Alvarez-Muñiz , S. W. Barwick , J. J. Beatty , D. Z. Besson , W. R. Binns , W. R. Carvalho , C. Chen , P. Chen , J. M. Clem , A. Connolly , P. F. Dowkontt , M. A. DuVernois , R. C. Field , D. Goldstein , P. W. Gorham , C. Hast , C. L. Heber , T. Huege , S. Hoover , M. H. Israel , A. Javaid , J. Kowalski , J. Lam , J. G. Learned , K. M. Liewer , J. T. Link , E. Lusczek , S. Matsuno , B. C. Mercurio , C. Miki , P. Miočinović , K. Mulrey , J. Nam , C. J. Naudet , J. Ng , R. J. Nichol , K. Palladino , B. F. Rauch , J. Roberts , K. Reil , B. Rotter , M. Rosen , L. Ruckman , D. Saltzberg , D. Seckel , D. Urdaneta , G. S. Varner , A. G. Vieregg , D. Walz , F. Wu , E. Zas

Measurement of the real dielectric permittivity epsilon_r of glacial ice

Using data collected by the Askaryan Radio Array (ARA) experiment at the South Pole, we have used long-baseline propagation of radio-frequency signals to extract information on the radio-frequency index-of-refraction in South Polar ice.…

Instrumentation and Methods for Astrophysics · Physics 2019-01-16 P. Allison , S. Archambault , J. Auffenberg , R. Bard , J. J. Beatty , M. Beheler-Amass , D. Z. Besson , M. Beydler , C. Brabec , C. -C. Chen , C. -H. Chen , P. Chen , A. Christenson , B. A. Clark , A. Connolly , L. Cremonesi , C. Deaconu , M. Duvernois , L. Friedman , R. Gaior , P. W. Gorham , J. Hanson , K. Hanson , J. Haugen , K. D. Hoffman , E. Hong , S. -Y. Hsu , L. Hu , J. -J. Huang , M. -H. A. Huang , A. Ishihara , A. Karle , J. L. Kelley , R. Khandelwal , M. -C. Kim , I. Kravchenko , T. Kuwabara , H. Landsman , A. Laundrie , C. -J. Li , T. C. Liu , M. -Y. Lu , K. Mase , T. Meures , J. Nam , R. J. Nichols , G. Nir , A. Novikov , E. Oberla , A. O'Murchadha , Y. Pan , C. Pfendner , K. Ratzlaff , M. Relich , J. Roth , P. Sandstrom , D. Seckel , Y. -S. Shiao , A. Shultz , M. Song , J. Touart , G. S. Varner , A. Vieregg , M. -Z. Wang , S. -H. Wang , S. Wissel , Y. Yang , S. Yoshida , R. Young

On the transition radiation interpretation of anomalous ANITA events

The Antarctic Impulsive Transient Antenna (ANITA) detector has observed several radio pulses coming from the surface of the ice cap at the South Pole. These pulses were attributed to upward-going atmospheric particle showers instead of the…

High Energy Astrophysical Phenomena · Physics 2023-11-10 Juan Ammerman-Yebra , Jaime Alvarez-Muñiz , Enrique Zas

Towards Determining the energy of the UHECRs observed by the ANITA detector

The Antarctic Impulsive Transient Antenna (ANITA) is a balloon-borne radio experiment designed to discover ultra-high energy cosmic neutrinos. The ANITA detector has completed one prototype and two full-scale flights above the Antarctic…

High Energy Astrophysical Phenomena · Physics 2019-08-21 Konstantin Belov

Design and Performance of the ARIANNA Hexagonal Radio Array Systems

We report on the development, installation and operation of the first three of seven stations deployed at the ARIANNA site's pilot Hexagonal Radio Array in Antarctica. The primary goal of the ARIANNA project is to observe ultra-high energy…

Instrumentation and Methods for Astrophysics · Physics 2014-10-28 S. W. Barwick , E. C. Berg , D. Z. Besson , E. Cheim , T. Duffin , J. C. Hanson , S. R. Klein , S. A. Kleinfelder , T. Prakash , M. Piasecki , K. Ratzlaff , C. Reed , M. Roumi , A. Samanta , T. Stezelberger , J. Tatar , J. Walker , R. Young , L. Zou

Characteristics of Four Upward-pointing Cosmic-ray-like Events Observed with ANITA

We report on four radio-detected cosmic-ray (CR) or CR-like events observed with the Antarctic Impulsive Transient Antenna (ANITA), a NASA-sponsored long-duration balloon payload. Two of the four were previously identified as stratospheric…

High Energy Astrophysical Phenomena · Physics 2016-08-17 P. W. Gorham , J. Nam , A. Romero-Wolf , S. Hoover , P. Allison , O. Banerjee , J. J. Beatty , K. Belov , D. Z. Besson , W. R. Binns , V. Bugaev , P. Cao , C. Chen , P. Chen , J. M. Clem , A. Connolly , B. Dailey , C. Deaconu , L. Cremonesi , P. F. Dowkonnt , M. A. Duvernois , R. C. Field , B. D. Fox , D. Goldstein , J. Gordon , C. Hast , C. L. Hebert , B. Hill , K. Hughes , R. Hupe , M. H. Israel , A. Javaid , J. Kowalski , J. Lam , J. G. Learned , K. M. Liewer , T. C. Liu , J. T. Link , E. Lusczek , S. Matsuno , B. C. Mercurio , C. Miki , P. Miocinovic , M. Mottram , K. Mulrey , C. J. Naudet , J. Ng , R. J. Nichol , K. Palladino , B. F. Rauch , K. Reil , J. Roberts , M. Rosen , B. Rotter , J. Russell , L. Ruckman , D. Saltzberg , D. Seckel , H. Schoorlemmer , S. Stafford , J. Stockham , M. Stockham , B. Strutt , K. Tatem , G. S. Varner , A. G. Vieregg , D. Walz , S. A. Wissel , F. Wu

Measurements of Antenna Surface for Millimeter-Wave Space Radio Telescope

In the construction of a space radio telescope, it is essential to use materials with a low noise factor and high mechanical robustness for the antenna surface. We present the results of measurements of the reflection performance of two…

Instrumentation and Methods for Astrophysics · Physics 2015-05-27 Kazuhisa Kamegai , Masato Tsuboi , Akihiro Doi , Eiichi Sato

Improved H2-He and H2-H2 Collision-Induced Absorption Models and Application to Outer-Planet Atmospheres

Using state-of-the-art ab initio interaction-induced dipole and potential-energy surfaces for hydrogen-helium (H2-He) pairs, we compute the rototranslational collision-induced absorption coefficient at 40-400 K for frequencies covering…

Earth and Planetary Astrophysics · Physics 2025-06-12 Glenn S. Orton , Magnus Gustafsson , Leigh N. Fletcher , Michael T. Roman , James A. Sinclair

Observation of Ultra-high-energy Cosmic Rays with the ANITA Balloon-borne Radio Interferometer

We report the observation of sixteen cosmic ray events of mean energy of 1.5 x 10^{19} eV, via radio pulses originating from the interaction of the cosmic ray air shower with the Antarctic geomagnetic field, a process known as…

High Energy Astrophysical Phenomena · Physics 2015-03-17 S. Hoover , J. Nam , P. W. Gorham , E. Grashorn , P. Allison , S. W. Barwick , J. J. Beatty , K. Belov , D. Z. Besson , W. R. Binns , C. Chen , P. Chen , J. M. Clem , A. Connolly , P. F. Dowkontt , M. A. DuVernois , R. C. Field , D. Goldstein , A. G. Vieregg , C. Hast , C. L. Hebert , M. H. Israel , A. Javaid , J. Kowalski , J. G. Learned , K. M. Liewer , J. T. Link , E. Lusczek , S. Matsuno , B. C. Mercurio , C. Miki , P. Miočinović , C. J. Naudet , J. Ng , R. J. Nichol , K. Palladino , K. Reil , A. Romero-Wolf , M. Rosen , L. Ruckman , D. Saltzberg , D. Seckel , G. S. Varner , D. Walz , F. Wu

On the prospects of ultra-high energy cosmic rays detection by high altitude antennas

Radio emission from Ultra-High Energy Cosmic Rays (UHECR) showers detected after specular reflection off the Antarctic ice surface has been recently demonstrated by the ANITA balloon-borne experiment. An antenna observing a large area of…

Instrumentation and Methods for Astrophysics · Physics 2015-06-17 P. Motloch , N. Hollon , P. Privitera

Radar Absorption, Basal Reflection, Thickness, and Polarization Measurements from the Ross Ice Shelf

Radio-glaciological parameters from Moore's Bay, in the Ross Ice Shelf, have been measured. The thickness of the ice shelf in Moore's Bay was measured from reflection times of radio-frequency pulses propagating vertically through the shelf…

Instrumentation and Methods for Astrophysics · Physics 2015-02-18 S. W. Barwick , E. C. Berg , D. Besson , T. Duffin , J. C. Hanson , S. R. Klein , S. A. Kleinfelder , C. Reed , M. Roumi , T. Stezelberger , J. Tatar , J. Walker , L. Zou