Search results for "observator"
showing 10 items of 410 documents
Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory
2010
We report a measurement of the flux of cosmic rays with unprecedented precision and Statistics using the Pierre Auger Observatory Based on fluorescence observations in coincidence with at least one Surface detector we derive a spectrum for energies above 10(18) eV We also update the previously published energy spectrum obtained with the surface detector array The two spectra are combined addressing the systematic uncertainties and, in particular. the influence of the energy resolution on the spectral shape The spectrum can be described by a broken power law E-gamma with index gamma = 3 3 below the ankle which is measured at log(10)(E-ankle/eV) = 18 6 Above the ankle the spectrum is describe…
Measurement of the background in the NEMO 3 double beta decay experiment
2009
In the double beta decay experiment NEMO 3 a precise knowledge of the background in the signal region is of outstanding importance. This article presents the methods used in NEMO 3 to evaluate the backgrounds resulting from most if not all possible origins. It also illustrates the power of the combined tracking-calorimetry technique used in the experiment.
Measuring the14C content in liquid scintillators
2016
We are going to perform a series of measurements where the 14C/12 C ratio will be measured from several liquid scintillator samples with a dedicated setup. The setup is designed with the aim of measuring ratios smaller than 10-18. Measurements take place in two underground laboratories: in the Baksan Neutrino Observatory, Russia and in the Pyhasalmi mine, Finland. In Baksan the measurements started in 2015 and in Pyhasalmi they start in the beginning of 2015. In order to fully understand the operation of the setup and its background contributions a development of simulation packages has also been started. Low-energy neutrino detection with a liquid scintillator requires that the intrinsic 1…
Beiträge zur Steigerung der Genauigkeit bei astronomischen Messungen
1937
Sonderabdruck aus den Verhandlungen der neunten Tagung der Baltischen geodätischen Kommission
Zvaigžņotā Debess: 1980, Pavasaris (87) - 1980/81, Ziema (90)
1980
Zvaigžņotā Debess: 1967, Ziema (34) - Rudens (37)
1967
Zvaigžņotā Debess: 1959, Ziema - Rudens
1959
Zvaigžņotā Debess: 1958, Rudens
1958
«ZVAIGŽŅOTĀ DEBESS» ir gadalaiku izdevums. Atbilstoši gadalaikam izdevumā sniegtas ziņas par planētām, meteoriem, komētām un citām interesantām debess parādībām. Populārzinātnisko rakstu nolūks ir informēt par astronomijas svarīgākiem sasniegumiem, jaunākiem notikumiem astronomijā, par observatorijām un ievērojamiem astronomiem, astronomijas vēsturi.
Histoire de l'astronomie a Toulouse : de l'origine a la fondation de l'observatoire actuel / par M. Bigourdan
1883
Separata de: Annales de l'Observatoire de Toulouse, t.II
Zvaigžņotā Debess: 2017, Rudens (237)
2017
Contents: “ZVAIGŽŅOTĀ DEBESS” FORTY YEARS AGO: U.Dzērvītis. Dispute on Hubble’s Constant Value (abridged) ; E.Mūkins. Ten «Venera»’s: Devices, Journeys and Results (abridged) ; DEVELOPMENTS in SCIENCE: K.Schwartz. New Discoveries in the Orion Molecular Cloud Complex ; SPACE RESEARCH and EXPLORATION: J.Jaunbergs. Salty Emanations of Enceladus ; R.Misa. Voyager: the Longest and Farthest ; OBSERVATORIES and INSTRUMENTS: J.Kuzmanis. Dragon Looks at the Sky ; K.Salmiņš. On ILRS Technical Workshop 2017 in Riga ; CONFERENCES and MEETINGS: M.Sudārs. Trends of Space Infrastructure Development in Europe ; M.Gills. Congress of European Planetary Science 2017 in Riga ; FLASHBACK: N.Cimahoviča. On Whirl…