On the extension of the sensitive area of an extensive air shower surface array
A large distance between true and reconstructed core locations of an extensive air shower (EAS) may results in great systematic mis-estimation of EAS parameters. The reconstruction of those EASs whose...
View ArticleAstrometry with MCAO at Gemini and at ELTs
We present in this study a first analysis of the astrometric error budget of absolute astrometry relative to background galaxies using adaptive optics. We use for this analysis multi-conjugated...
View ArticleMultipole Electrodynamic Ion Trap Geometries for Microparticle Confinement...
Trapping of microparticles and aerosols is of great interest for physics and chemistry. We report microparticle trapping in multipole linear Paul trap geometries, operating under Standard Ambient...
View ArticleA Technique for Detection of PeV Neutrinos Using a Phased Radio Array...
The detection of high energy neutrinos ($10^{15}-10^{20}$ eV or $1-10^{5}$ PeV) is an important step toward understanding the most energetic cosmic accelerators and would enable tests of fundamental...
View ArticleProcessing of X-ray Microcalorimeter Data with Pulse Shape Variation using...
We present a method using principal component analysis (PCA) to process x-ray pulses with severe shape variation where traditional optimal filter methods fail. We demonstrate that PCA is able to...
View ArticleDevelopment of Lumped Element Kinetic Inductance Detectors for the W-Band
We are developing a Lumped Element Kinetic Inductance Detector (LEKID) array able to operate in the W-band (75-110 GHz) in order to perform ground-based Cosmic Microwave Background (CMB) and mm-wave...
View ArticleA Technique for Detection of PeV Neutrinos Using a Phased Radio Array...
The detection of high energy neutrinos ($10^{15}-10^{20}$ eV or $1-10^{5}$ PeV) is an important step toward understanding the most energetic cosmic accelerators and would enable tests of fundamental...
View ArticleA cryogenic rotation stage with a large clear aperture for the half-wave...
We describe the cryogenic half-wave plate rotation mechanisms built for and used in Spider, a polarization-sensitive balloon-borne telescope array that observed the Cosmic Microwave Background at 95...
View ArticleRadio measurements of the energy and the depth of the shower maximum of...
We reconstructed the energy and the position of the shower maximum of air showers with energies $E \gtrsim 100\,$PeV applying a method using radio measurements performed with Tunka-Rex. An...
View ArticleA novel sampling theorem on the rotation group [Replacement]
We develop a novel sampling theorem for functions defined on the three-dimensional rotation group SO(3) by connecting the rotation group to the three-torus through a periodic extension. Our sampling...
View ArticleA facility to evaluate the focusing performance of mirrors for Cherenkov...
Cherenkov Telescopes are equipped with optical dishes of large diameter -- in general based on segmented mirrors -- with typical angular resolution of a few arc-minutes. To evaluate the mirror's...
View ArticleX-Ray Polarimetry [Replacement]
We review the basic principles of X-ray polarimetry and current detector technologies based on the photoelectric effect, Bragg reflection, and Compton scattering. Recent technological advances in...
View ArticleSilicon photomultiplier-based Compton Telescope for Safety and Security...
A Compton gamma imager has been developed for use in consequence management operations and in security investigations. The imager uses solid inorganic scintillator, known for robust performance in...
View ArticleDouble-diffusive magnetorotational instability of super-rotation under the...
It is demonstrated that the Azimuthal MagnetoRotational Instability (AMRI) also works with super-rotation contrary to the standard MRI for axial fields which requires negative shear. The stability...
View ArticleTechnology advancement of the CCD201-20 EMCCD for the WFIRST coronagraph...
The Wide Field InfraRed Survey Telescope-Astrophysics Focused Telescope Asset (WFIRST-AFTA) mission is a 2.4-m class space telescope that will be used across a swath of astrophysical research domains....
View ArticlePhotometric Redshift Estimation for Quasars by Integration of KNN and SVM
The massive photometric data collected from multiple large-scale sky surveys offer significant opportunities for measuring distances of celestial objects by photometric redshifts. However, catastrophic...
View ArticleThe Caltech-NRAO Stripe 82 Survey (CNSS) Paper I: The Pilot Radio Transient...
We have commenced a multi-year program, the Caltech-NRAO Stripe 82 Survey (CNSS), to search for radio transients with the Jansky VLA in the SDSS Stripe 82 region. The CNSS will deliver five epochs over...
View ArticleRadio measurements of the energy and the depth of the shower maximum of...
We reconstructed the energy and the position of the shower maximum of air showers with energies $E \gtrsim 100\,$PeV applying a method using radio measurements performed with Tunka-Rex. An...
View ArticleAstrometry with MCAO at Gemini and at ELTs [Replacement]
We present in this study a first analysis of the astrometric error budget of absolute astrometry relative to background galaxies using adaptive optics. We use for this analysis multi-conjugated...
View ArticleA new neutrino source for the study of the solar neutrino physics in the...
Production of a neutrino source through proton induced reaction is studied by using the particle transport code, GEANT4. Unstable isotope such as $^{27}$Si can be produced when $^{27}$Al target is...
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