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We present a Bayesian approach to calculating the coefficients that convert the outputs of ALMA 183 GHz water-vapour radiometers into estimates of path fluctuations which can then be used to correct the observed interferometric…

Instrumentation and Methods for Astrophysics · Physics 2009-03-19 B. Nikolic

In order to better utilize the information contained in the shower images generated by imaging Cherenkov telescopes (IACTs) equipped with cameras with small pixels, images are fit to a parametrization of image shapes gained from Monte Carlo…

Astrophysics · Physics 2007-05-23 M. Ulrich , A. Daum , G. Hermann , W. Hofmann

This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb$^{-1}$ of LHC proton--proton collision data taken at centre-of-mass energies of $\sqrt{s}$ = 7 and 8 TeV. The reconstruction…

High Energy Physics - Experiment · Physics 2014-11-14 ATLAS Collaboration

Short radio pulses can be measured from showers of both high-energy cosmic rays and neutrinos. While commonly several antenna stations are needed to reconstruct the energy of an air shower, we describe a novel method that relies on the…

Instrumentation and Methods for Astrophysics · Physics 2019-11-26 Christoph Welling , Christian Glaser , Anna Nelles

The detection of extensive air showers (EAS) through their radio signal is becoming one of the most promising techniques for the study of Neutrinos and Cosmic rays at the highest energies. For the design, optimization and characterization…

Instrumentation and Methods for Astrophysics · Physics 2021-03-24 Matias Tueros , Anne Zilles

In this work the simulation of the Extensive Air Showers was performed by investigating the longitudinal development parameters (N and Xmax) by using a system for air shower simulation which is called AIRES version 2.6.0 at the energy range…

General Physics · Physics 2013-09-16 A. Ahmed Al-Rubaiee , Ahmed Jumaah

We present new methodological features and physical ingredients included in the 1D radiative transfer code HELIOS, improving the hemispheric two-stream formalism. We conduct a thorough intercomparison survey with several established forward…

The High-Altitude Water Cherenkov (HAWC) Observatory comprises 300 water Cherenkov detectors, each equipped with four photomultipliers, located on the Volc\'{a}n Sierra Negra in Mexico at 4,100 masl. This observatory can detect gamma rays…

High Energy Astrophysical Phenomena · Physics 2025-09-04 J. Jaimes , T. Capistrán , I. Torres

Correcting for the sky signature usually requires supplementary calibration data which are very expensive in terms of telescope time. In addition, the scheduling flexibility is restricted as these data have to be taken usually directly…

Instrumentation and Methods for Astrophysics · Physics 2014-01-31 W. Kausch , S. Noll , A. Smette , S. Kimeswenger , H. Horst , H. Sana , A. Jones , M. Barden , C. Szyszka , J. Vinther

Atmospheric aerosols influence the Earth's climate, primarily by affecting cloud formation and scattering visible radiation. However, aerosol-related physical processes in climate simulations are highly uncertain. Constraining these…

Horizon-T, a modern Extensive Air Showers (EAS) detector system, is constructed at Tien Shan high-altitude Science Station of Lebedev Physical Institute of the Russian Academy of Sciences at approximately 3340 meters above the sea level in…

Instrumentation and Detectors · Physics 2019-06-14 D. Beznosko , A. Iakovlev , A. Duspayev , M. I. Vildanova , T. Uakhitov , M. Yessenov , V. V. Zhukov

In air shower experiments information about the initial cosmic ray particle or about the shower development is obtained by exploiting the correlations between the quantities of interest and the directly measurable quantities. It is shown…

Astrophysics · Physics 2007-05-23 Wolfgang Wittek , Harald Kornmayer , The HEGRA Collaboration

Monitoring the abundance of greenhouse gases (GHGs) such as carbon dioxide (CO$_2$) and methane (CH$_4$) is necessary to quantify their impact on global warming and climate change. Although a number of satellites and ground-based networks…

Earth and Planetary Astrophysics · Physics 2025-09-15 Marcelo Aron Fetzner Keniger , David Armstrong , Matteo Brogi , Siddharth Gandhi , Marina Lafarga

Measurements of atmosphere-surface exchange are largely limited by the availability of fast-response gas analyzers; this limitation hampers our understanding of the role of terrestrial ecosystems in atmospheric chemistry and global change.…

Atmospheric and Oceanic Physics · Physics 2024-09-04 Anas Emad

We present an improved method for the precise reconstruction of cosmic ray air showers above $10^{17}$ eV with sparse radio arrays. The method is based on the comparison of predictions for radio pulse shapes by CoREAS simulations to…

Context: The effective temperature is a key parameter governing the properties of a star. For stellar chemistry, it has the strongest impact on the accuracy of the abundances derived. Since Cepheids are pulsating stars, determining their…

Solar and Stellar Astrophysics · Physics 2020-09-16 B. Lemasle , M. Hanke , J. Storm , G. Bono , E. K. Grebel

The stereoscopic reconstruction of air showers viewed by multiple imaging atmospheric Cherenkov telescopes (IACTs) allows a more precise reconstruction of shower energies and hence an improved determination of energy spectra. Reconstruction…

Astrophysics · Physics 2007-05-23 W. Hofmann

The mass composition of cosmic rays contains important clues about their origin. Accurate measurements are needed to resolve long-standing issues such as the transition from Galactic to extragalactic origin, and the nature of the cutoff…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 S. Buitink , A. Corstanje , J. E. Enriquez , H. Falcke , J. R. Hörandel , T. Huege , A. Nelles , J. P. Rachen , P. Schellart , O. Scholten , S. ter Veen , S. Thoudam , T. N. G. Trinh

For the submillimeter band observations, we have been routinely adopting the calibration cycle time of 20-30 minutes, which is the same as any typical centimeter and millimeter band observations. This cycle time, largely corrects only the…

Astrophysics · Physics 2007-06-04 Dharam Vir Lal , Satoki Matsushita , Jeremy Lim

The science goals for ground-based large-area surveys, such as the Dark Energy Survey, Pan-STARRS, and the Large Synoptic Survey Telescope, require calibration of broadband photometry that is stable in time and uniform over the sky to…

Instrumentation and Methods for Astrophysics · Physics 2013-12-12 David L. Burke , Abhijit Saha , Jenna Claver , T. Axelrod , Chuck Claver , Darren DePoy , Zeljko Ivezic , Lynne Jones , R. Chris Smith , Christopher W. Stubbs