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Analyses of stellar spectra often begin with the determination of a number of parameters that define a model atmosphere. This work presents a prototype for an automated spectral classification system that uses a 15 nm-wide region around…

Astrophysics · Physics 2016-08-30 C. Allende Prieto

We describe a method for reconstructing spatially explicit maps of seasonal palaeoclimate variables from site-based reconstructions. Using a 3D-Variational technique, the method finds the best statistically unbiased, and spatially…

Numerical Analysis · Mathematics 2020-03-10 S. F. Cleator , S. P. Harrison , N. K. Nichols , I. C. Prentice , I. Roulstone

We aim to understand cloud formation in substellar objects. We combined the non-equilibrium, stationary cloud model of Helling, Woitke & Thi (2008; seed formation, growth, evaporation, gravitational settling, element conservation) with the…

Astrophysics · Physics 2009-11-13 Christiane Helling , Matthias Dehn , Peter Woitke , Peter H. Hauschildt

The High Energy Stereoscopic System (H.E.S.S.) is an array of ground-based imaging atmospheric Cherenkov telescopes in Namibia. For the first time, the H.E.S.S. collaboration is releasing a small dataset of event lists and instrument…

High Energy Astrophysical Phenomena · Physics 2018-10-11 H. E. S. S. Collaboration

The current methods to determine the primary energy of ultra-high energy cosmic rays (UHECRs) are different when dealing with hadron or photon primaries. The current experiments combine two different techniques, an array of surface…

High Energy Astrophysical Phenomena · Physics 2015-04-17 G. Ros , G. A. Medina-Tanco , A. D. Supanitsky , L. del Peral , M. D. Rodríguez-Frías

Bias correction is a common pre-processing step applied to climate model data before it is used for further analysis. This article introduces an efficient adaptation of a well-established bias-correction method - quantile mapping - for…

Applications · Statistics 2024-06-03 Maggie D. Bailey , Douglas W. Nychka , Manajit Sengupta , Soutir Bandyopadhyay

The energy calibration of calorimeters at collider experiments, such as the ones at the CERN Large Hadron Collider, is crucial for achieving the experiments physics objectives. Standard calibration approaches have limitations that become…

The hybrid model combines the physics-based primitive-equations model SPEEDY with a machine learning-based (ML-based) model component, while ERA5 reanalyses provide the presumed true states of the atmosphere. Six-hourly simulated noisy…

Chaotic Dynamics · Physics 2025-09-29 Dylan Elliott , Troy Arcomano , Istvan Szunyogh , Brian R. Hunt

The theory of remote sensing shows that observing a planet at multiple phase angles ($\alpha$) is a powerful strategy to characterize its atmosphere. Here, we analyse how the information contained in reflected-starlight spectra of…

Earth and Planetary Astrophysics · Physics 2021-11-24 Óscar Carrión-González , Antonio García Muñoz , Nuno C. Santos , Juan Cabrera , Szilárd Csizmadia , Heike Rauer

This preprint encompasses 14 individual contributions of the H.E.S.S. collaboration to the 28th ICRC: Status, Performance of the cameras, Observation of Galactic and extra Galactic sources, Performance of the telescope, Application of a…

Astrophysics · Physics 2007-05-23 H. E. S. S. collaboration

We present a detailed statistical treatment of the energy calibration of hybrid air-shower detectors, which combine a surface detector array and a fluorescence detector, to obtain an unbiased estimate of the calibration curve. The special…

Instrumentation and Methods for Astrophysics · Physics 2016-08-08 H. P. Dembinski , B. Kégl , I. C. Mariş , M. Roth , D. Veberič

Atmospheric conditions at the site of a cosmic ray observatory must be known for reconstructing observed extensive air showers. The Global Data Assimilation System (GDAS) is a global atmospheric model predicated on meteorological…

High Energy Astrophysical Phenomena · Physics 2012-02-27 The Pierre Auger Collaboration , P. Abreu , M. Aglietta , M. Ahlers , E. J. Ahn , I. F. M. Albuquerque , D. Allard , I. Allekotte , J. Allen , P. Allison , A. Almela , J. Alvarez Castillo , J. Alvarez-Muñiz , M. Ambrosio , A. Aminaei , L. Anchordoqui , S. Andringa , T. Antičić , C. Aramo , E. Arganda , F. Arqueros , H. Asorey , P. Assis , J. Aublin , M. Ave , M. Avenier , G. Avila , T. Bäcker , A. M. Badescu , M. Balzer , K. B. Barber , A. F. Barbosa , R. Bardenet , S. L. C. Barroso , B. Baughman , J. Bäuml , J. J. Beatty , B. R. Becker , K. H. Becker , A. Bellétoile , J. A. Bellido , S. BenZvi , C. Berat , X. Bertou , P. L. Biermann , P. Billoir , F. Blanco , M. Blanco , C. Bleve , H. Blümer , M. Boháčová , D. Boncioli , C. Bonifazi , R. Bonino , N. Borodai , J. Brack , I. Brancus , P. Brogueira , W. C. Brown , R. Bruijn , P. Buchholz , A. Bueno , R. E. Burton , K. S. Caballero-Mora , B. Caccianiga , L. Caramete , R. Caruso , A. Castellina , O. Catalano , G. Cataldi , L. Cazon , R. Cester , J. Chauvin , S. H. Cheng , A. Chiavassa , J. A. Chinellato , J. Chirinos Diaz , J. Chudoba , R. W. Clay , M. R. Coluccia , R. Conceição , F. Contreras , H. Cook , M. J. Cooper , J. Coppens , A. Cordier , S. Coutu , C. E. Covault , A. Creusot , A. Criss , J. Cronin , A. Curutiu , S. Dagoret-Campagne , R. Dallier , B. Daniel , S. Dasso , K. Daumiller , B. R. Dawson , R. M. de Almeida , M. De Domenico , C. De Donato , S. J. de Jong , G. De La Vega , W. J. M. de Mello Junior , J. R. T. de Mello Neto , I. De Mitri , V. de Souza , K. D. de Vries , L. del Peral , M. del Río , O. Deligny , H. Dembinski , N. Dhital , C. Di Giulio , M. L. Díaz Castro , P. N. Diep , F. Diogo , C. Dobrigkeit , W. Docters , J. C. D'Olivo , P. N. Dong , A. Dorofeev , J. C. dos Anjos , M. T. Dova , D. D'Urso , I. Dutan , J. Ebr , R. Engel , M. Erdmann , C. O. Escobar , J. Espadanal , A. Etchegoyen , P. Facal San Luis , I. Fajardo Tapia , H. Falcke , G. Farrar , A. C. Fauth , N. Fazzini , A. P. Ferguson , B. Fick , A. Filevich , A. Filipčič , S. Fliescher , C. E. Fracchiolla , E. D. Fraenkel , O. Fratu , U. Fröhlich , B. Fuchs , R. Gaior , R. F. Gamarra , S. Gambetta , B. García , S. T. Garcia Roca , D. Garcia-Gamez , D. Garcia-Pinto , A. Gascon , H. Gemmeke , P. L. Ghia , U. Giaccari , M. Giller , H. Glass , M. S. Gold , G. Golup , F. Gomez Albarracin , M. Gómez Berisso , P. F. Gómez Vitale , P. Gonçalves , D. Gonzalez , J. G. Gonzalez , B. Gookin , A. Gorgi , P. Gouffon , E. Grashorn , S. Grebe , N. Griffith , M. Grigat , A. F. Grillo , Y. Guardincerri , F. Guarino , G. P. Guedes , A. Guzman , P. Hansen , D. Harari , T. A. Harrison , J. L. Harton , A. Haungs , T. Hebbeker , D. Heck , A. E. Herve , C. Hojvat , N. Hollon , V. C. Holmes , P. Homola , J. R. Hörandel , A. Horneffer , P. Horvath , M. Hrabovský , D. Huber , T. Huege , A. Insolia , F. Ionita , A. Italiano , C. Jarne , S. Jiraskova , M. Josebachuili , K. Kadija , K. H. Kampert , P. Karhan , P. Kasper , B. Kégl , B. Keilhauer , A. Keivani , J. L. Kelley , E. Kemp , R. M. Kieckhafer , H. O. Klages , M. Kleifges , J. Kleinfeller , J. Knapp , D. -H. Koang , K. Kotera , N. Krohm , O. Krömer , D. Kruppke-Hansen , F. Kuehn , D. Kuempel , J. K. Kulbartz , N. Kunka , G. La Rosa , C. Lachaud , D. LaHurd , L. Latronico , R. Lauer , P. Lautridou , S. Le Coz , M. S. A. B. Leão , D. Lebrun , P. Lebrun , M. A. Leigui de Oliveira , A. Letessier-Selvon , I. Lhenry-Yvon , K. Link , R. López , A. Lopez Agüera , K. Louedec , J. Lozano Bahilo , L. Lu , A. Lucero , M. Ludwig , H. Lyberis , M. C. Maccarone , C. Macolino , S. Maldera , D. Mandat , P. Mantsch , A. G. Mariazzi , J. Marin , V. Marin , I. C. Maris , H. R. Marquez Falcon , G. Marsella , D. Martello , L. Martin , H. Martinez , O. Martínez Bravo , H. J. Mathes , J. Matthews , J. A. J. Matthews , G. Matthiae , D. Maurel , D. Maurizio , P. O. Mazur , G. Medina-Tanco , M. Melissas , D. Melo , E. Menichetti , A. Menshikov , P. Mertsch , C. Meurer , S. Mićanović , M. I. Micheletti , I. A. Minaya , L. Miramonti , L. Molina-Bueno , S. Mollerach , M. Monasor , D. Monnier Ragaigne , F. Montanet , B. Morales , C. Morello , E. Moreno , J. C. Moreno , M. Mostafá , C. A. Moura , M. A. Muller , G. Müller , M. Münchmeyer , R. Mussa , G. Navarra , J. L. Navarro , S. Navas , P. Necesal , L. Nellen , A. Nelles , J. Neuser , P. T. Nhung , M. Niechciol , L. Niemietz , N. Nierstenhoefer , D. Nitz , D. Nosek , L. Nožka , J. Oehlschläger , A. Olinto , M. Ortiz , N. Pacheco , D. Pakk Selmi-Dei , M. Palatka , J. Pallotta , N. Palmieri , G. Parente , E. Parizot , A. Parra , S. Pastor , T. Paul , M. Pech , J. Pȩkala , R. Pelayo , I. M. Pepe , L. Perrone , R. Pesce , E. Petermann , S. Petrera , P. Petrinca , A. Petrolini , Y. Petrov , C. Pfendner , R. Piegaia , T. Pierog , P. Pieroni , M. Pimenta , V. Pirronello , M. Platino , V. H. Ponce , M. Pontz , A. Porcelli , P. Privitera , M. Prouza , E. J. Quel , S. Querchfeld , J. Rautenberg , O. Ravel , D. Ravignani , B. Revenu , J. Ridky , S. Riggi , M. Risse , P. Ristori , H. Rivera , V. Rizi , J. Roberts , W. Rodrigues de Carvalho , G. Rodriguez , J. Rodriguez Martino , J. Rodriguez Rojo , I. Rodriguez-Cabo , M. D. Rodríguez-Frías , G. Ros , J. Rosado , T. Rossler , M. Roth , B. Rouillé-d'Orfeuil , E. Roulet , A. C. Rovero , C. Rühle , A. Saftoiu , F. Salamida , H. Salazar , F. Salesa Greus , G. Salina , F. Sánchez , C. E. Santo , E. Santos , E. M. Santos , F. Sarazin , B. Sarkar , S. Sarkar , R. Sato , N. Scharf , V. Scherini , H. Schieler , P. Schiffer , A. Schmidt , O. Scholten , H. Schoorlemmer , J. Schovancova , P. Schovánek , F. Schröder , S. Schulte , D. Schuster , S. J. Sciutto , M. Scuderi , A. Segreto , M. Settimo , A. Shadkam , R. C. Shellard , I. Sidelnik , G. Sigl , H. H. Silva Lopez , O. Sima , A. Śmiałkowski , R. Šmída , G. R. Snow , P. Sommers , J. Sorokin , H. Spinka , R. Squartini , Y. N. Srivastava , S. Stanic , J. Stapleton , J. Stasielak , M. Stephan , A. Stutz , F. Suarez , T. Suomijärvi , A. D. Supanitsky , T. Šuša , M. S. Sutherland , J. Swain , Z. Szadkowski , M. Szuba , A. Tapia , M. Tartare , O. Taşcău , C. G. Tavera Ruiz , R. Tcaciuc , N. T. Thao , D. Thomas , J. Tiffenberg , C. Timmermans , W. Tkaczyk , C. J. Todero Peixoto , G. Toma , L. Tomankova , B. Tomé , A. Tonachini , P. Travnicek , D. B. Tridapalli , G. Tristram , E. Trovato , M. Tueros , R. Ulrich , M. Unger , M. Urban , J. F. Valdés Galicia , I. Valiño , L. Valore , A. M. van den Berg , E. Varela , B. Vargas Cárdenas , J. R. Vázquez , R. A. Vázquez , D. Veberič , V. Verzi , J. Vicha , M. Videla , L. Villaseñor , H. Wahlberg , P. Wahrlich , O. Wainberg , D. Walz , A. A. Watson , M. Weber , K. Weidenhaupt , A. Weindl , F. Werner , S. Westerhoff , B. J. Whelan , A. Widom , G. Wieczorek , L. Wiencke , B. Wilczyńska , H. Wilczyński , M. Will , C. Williams , T. Winchen , M. Wommer , B. Wundheiler , T. Yamamoto , T. Yapici , P. Younk , G. Yuan , A. Yushkov , B. Zamorano , E. Zas , D. Zavrtanik , M. Zavrtanik , I. Zaw , A. Zepeda , Y. Zhu , M. Zimbres Silva , M. Ziolkowski

Understanding the atmospheric parameters of stars on the top of the RGB is essential to reveal the chemical composition of the Milky Way, as they can be used to probe the farthest parts of our Galaxy. Our goal is to determine the chemical…

Solar and Stellar Astrophysics · Physics 2024-04-23 Z. Dencs , A. Derekas , T. Mitnyan , M. F. Andersen , B. Cseh , F. Grundahl , V. Hegedűs , J. Kovács , L. Kriskovics , P. L. Palle , A. Pál , L. Szigeti , Sz. Mészáros

Measuring the energy spectrum of air shower components crucial for understanding primary cosmic rays and the physical processes governing their interactions in the atmosphere. However, accurately measuring the energy of shower particles…

High Energy Physics - Experiment · Physics 2025-09-25 P. Assis , R. Conceição , P. J. Costa , M. Freitas , B. Tomé

We report for the first time the stellar atmospheric parameters for a a set of post-AGB stars classified by Suarez et al. (2006). The stellar spectra were taken from optical region, with low-resolution and have different spectral ranges. We…

Solar and Stellar Astrophysics · Physics 2018-06-20 R. E. Molina

We present the results of a preliminary study of a correction method applied to the Imaging Atmospheric Cherenkov Telescope images affected by clouds. The studied data are Monte Carlo simulations made with CORSIKA, imitating the very high…

Instrumentation and Methods for Astrophysics · Physics 2024-02-29 Natalia Żywucka , Julian Sitarek , Dorota Sobczyńska , Mario Pecimotika , Dario Hrupec , Dijana Dominis Prester , Lovro Pavletić , Saša Mićanović

A wide range of atmospheric monitoring instruments is employed at the Pierre Auger Observatory: two laser facilities, elastic lidar stations, aerosol phase function monitors, a horizontal attenuation monitor, star monitors, weather…

Astrophysics · Physics 2019-08-13 Michael Prouza

We present the Bayesian Global Sky Model (B-GSM), a new absolutely calibrated model of the diffuse Galactic foreground at frequencies below 408 MHz. We assemble a dataset of publicly available diffuse emission maps at frequencies between 45…

Instrumentation and Methods for Astrophysics · Physics 2025-04-08 George Carter , Will Handley , Mark Ashdown , Nima Razavi-Ghods

Recently the Spitzer Space Telescope observed the transiting extrasolar planets, TrES-1 and HD209458b. These observations have provided the first estimates of the day side thermal flux from two extrasolar planets orbiting Sun-like stars. In…

Astrophysics · Physics 2009-11-13 Travis S. Barman , Peter H. Hauschildt , France Allard