151. Gravity wave instability structures and turbulence from more than 1.5 years of OH[ast] airglow imager observations in SloveniaRené Sedlak, Patrick Hannawald, Carsten Schmidt, Sabine Wüst, Michael Bittner, Samo Stanič, 2021, original scientific article Abstract: We analyzed 286 nights of data from the OH* airglow imager FAIM 3 (Fast Airglow IMager) acquired at Otlica Observatory, Slovenia, between 26 October 2017 and 6 June 2019. Measurements were performed with a spatial resolution of 24 m per pixel and a temporal resolution of 2.8 s. Multiple turbulence episodes were observed and the energy dissipation rate in the upper mesosphere/lower thermosphere region was estimated from image sequences in 25 cases. Values range around 0.08 and 9.03 W/kg and would lead to an approximated localized maximum heating of 0.03–3.02 K per turbulence event.
Keywords: upper mesosphere, lower thermosphere, remote sensing, gravity waves, turbulence, Bora episodes
Published in RUNG: 25.10.2021; Views: 1877; Downloads: 0
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152. Kanarski otoki v plamenihUroš Slak, Samo Stanič, Natalija Švab, radio or television event Abstract: Intervju o izbruhu ognjenika Cumbre Vieja na La Palmi, Kanarski otoki, Španjia, ter o raziskavah v okviru projekta Polje Čerenkovih teleskopov (CTA), ki potekajo na observatoriju Roque de los Muchachos.
Keywords: ognjenik, izbruh, astrofizika, gama žarki visokih energij, atmosfera, lidar
Published in RUNG: 04.10.2021; Views: 2195; Downloads: 0
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153. Design and implementation of the AMIGA embedded system for data acquisitionA. Aab, Andrej Filipčič, Jon Paul Lundquist, Samo Stanič, Marta Trini, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2021, original scientific article Keywords: Sprotno zajemanje podatkov, kontrolni sistemi, algoritmi, baze podatkov, Observatorij Pierre Auger
Published in RUNG: 21.07.2021; Views: 2109; Downloads: 180
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154. Extraction of the muon signals recorded with the surface detector of the Pierre Auger Observatory using recurrent neural networksA. Aab, Andrej Filipčič, Jon Paul Lundquist, Samo Stanič, Marta Trini, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2021, original scientific article Keywords: Statistične metode, Čerenkov detektor, kalibracije in metode prilagajanja, Observatorij Pierre Auger
Published in RUNG: 19.07.2021; Views: 2346; Downloads: 626
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155. Deep-learning based reconstruction of the shower maximum X [sub] (max) using the water-Cherenkov detectors of the Pierre Auger ObservatoryA. Aab, Andrej Filipčič, Jon Paul Lundquist, Samo Stanič, Marta Trini, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2021, original scientific article Keywords: Prepoznavanje vzorcev, kalibracija in metode prilagajanja, veliki detektorski sistemi za fiziko in astrofiziko delcev, Observatory Pierre Auger
Published in RUNG: 16.07.2021; Views: 2924; Downloads: 198
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156. Neznanka, ki na odgovor še čaka2021, interview Abstract: Vprašanje, kako in kje nastajajo kozmični delci ekstremnih energij, je odprto že več kot petdeset let. Med najverjetnejšimi kraji njihovega nastanka sodijo aktivna galaktična jedra; to so središča galaksij, v katerih se skrivajo črne luknje, ki požirajo snov iz okolice. V raziskavah mednarodne kolaboracije Pierre Auger sodelujejo tudi slovenski raziskovalci z Univerze v Novi Gorici in Instituta Jožef Stefan.
Keywords: kozmični delci ekstremnih energij, aktivna galaktična jedra, observatorij Pierre Auger, observatorij Cherenkov Telescope Array, CTA
Published in RUNG: 02.06.2021; Views: 2478; Downloads: 0
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157. The determination of highly time-resolved and source-separated black carbon emission rates using radon as a tracer of atmospheric dynamicsAsta Gregorič, Luka Drinovec, Irena Ježek, Janja Vaupotič, Matevž Lenarčič, Domen Grauf, Longlong Wang, Maruška Mole, Samo Stanič, Griša Močnik, 2020, original scientific article Keywords: black carbon, radon, air pollution, biomass burning, Aethalometer
Published in RUNG: 10.05.2021; Views: 2449; Downloads: 0
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158. The energy spectrum of ultra-high energy cosmic rays measured at the Pierre Auger Observatory and at the Telescope ArrayOlivier Deligny, Andrej Filipčič, Gašper Kukec Mezek, Jon Paul Lundquist, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2019, published scientific conference contribution Keywords: ultra-high energy cosmic rays (UHECR), UHECR energy spectrum, Pierre Auger Observatory, Telescope Array
Published in RUNG: 10.05.2021; Views: 2081; Downloads: 67
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159. Measurement of the fluctuations in the number of muons in extensive air showers with the Pierre Auger ObservatoryA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Jon Paul Lundquist, Samo Stanič, Marta Trini, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2021, original scientific article Keywords: ultra-high energy cosmic rays, extensive air showers (EAS), EAS muonic component, hadronic interaction models, Pierre Auger Observatory
Published in RUNG: 29.04.2021; Views: 2239; Downloads: 0
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160. Calibration of the underground muon detector of the Pierre Auger ObservatoryA. Aab, Andrej Filipčič, Jon Paul Lundquist, Samo Stanič, Marta Trini, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2021, original scientific article Abstract: To obtain direct measurements of the muon content of extensive air showers with energy above 10[sup]16.5 eV, the Pierre Auger Observatory is currently being equipped with an underground muon detector (UMD), consisting of 219 10 m[sup]2-modules, each segmented into 64 scintillators coupled to silicon photomultipliers (SiPMs). Direct access to the shower muon content allows for the study of both of the composition of primary cosmic rays and of high-energy hadronic interactions in the forward direction. As the muon density can vary between tens of muons per m[sup]2 close to the intersection of the shower axis with the ground to much less than one per m[sup]2 when far away, the necessary broad dynamic range is achieved by the simultaneous implementation of two acquisition modes in the read-out electronics: the binary mode, tuned to count single muons, and the ADC mode, suited to measure a high number of them. In this work, we present the end-to-end calibration of the muon detector modules: first, the SiPMs are calibrated by means of the binary channel, and then, the ADC channel is calibrated using atmospheric muons, detected in parallel to the shower data acquisition. The laboratory and field measurements performed to develop the implementation of the full calibration chain of both binary and ADC channels are presented and discussed. The calibration procedure is reliable to work with the high amount of channels in the UMD, which will be operated continuously, in changing environmental conditions, for several years.
Keywords: ultra-high energy cosmic rays, extensive air showers (EAS), EAS muonic component, Pierre Auger Observatory, underground muon detector, detector calibration
Published in RUNG: 14.04.2021; Views: 2800; Downloads: 139
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