Search results for "180"
showing 10 items of 4249 documents
Dialogus de systemate mundi
1635
Títol al frontispici: "Dialogus de systemate mundi, autore Galilæo Galilæi Lynceo, serenissimo Ferdinando II. Hetrur. magno-duci dicatus. Augustæ Treboc. Impensis Bonaventuræ et Abrahami Elzevir bibliopolar. Leydens. Anno S. 1635" Sign.: ):(4, a4, A-Z4, Aa-Zz4, Aaa-Ttt4 Frontispici calcogràfic representant a Copèrnic, Ptolemeu i Aristòtil En f. ):(4v retrat calcogràfic de l'autor: " Jac. Heyden sculp." Il·lustracions xilogràfiques intercalades en el text
Astronomica curiosa, y descripcion del mundo superior, y inferior : contiene la especulacion de los orbes, y globos de entrambas esferas ...
1677
Signartures: [ ]4, 2[creu grega]4, A-Z4, 2A-2E4, 2F2 Portadella Portada amb orla tipogràfica Nombrosos gravats xilogràfics intercalats en el text
SAX J1808.4-3658, an accreting millisecond pulsar shining in gamma rays?
2016
We report the detection of a possible gamma-ray counterpart of the accreting millisecond pulsar SAX J1808.4-3658. The analysis of ~6 years of data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope (Fermi-LAT) within a region of 15deg radius around the position of the pulsar reveals a point gamma-ray source detected at a significance of ~6 sigma (Test Statistic TS = 32), with position compatible with that of SAX J1808.4-3658 within 95% Confidence Level. The energy flux in the energy range between 0.6 GeV and 10 GeV amounts to (2.1 +- 0.5) x 10-12 erg cm-2 s-1 and the spectrum is well-represented by a power-law function with photon index 2.1 +- 0.1. We searched for si…
New insights on the puzzling LMXB 1RXS J180408.9-342058: the intermediate state, the clocked type-I X-ray bursts and much more
2019
1RXS J180408.9--342058 is a low mass X-ray binary hosting a neutron star, which shows X-ray activity at very different mass-accretion regimes, from very faint to almost the Eddington luminosity. In this work, we present a comprehensive X-ray study of this source using data from the Neil Gehrels Swift Observatory, NuSTAR and INTEGRAL/JEM-X. In order to follow the spectral evolution, we analysed the 2015 outburst using Swift data and three Nustar observations. Besides the canonical hard and soft spectral states, we identified the rarely observed intermediate state. This was witnessed by the appeareance of the accretion disk emission in the spectrum (at $kT_{\rm disk}$ $\sim$0.7 keV) and the s…
Traitement de données RGB et Lidar à extrêmement haute résolution: retombées de la compétition de fusion de données 2015 de l'IEEE GRSS - Partie A / …
2016
International audience; In this paper, we discuss the scientific outcomes of the 2015 data fusion contest organized by the Image Analysis and Data Fusion Technical Committee (IADF TC) of the IEEE Geoscience and Remote Sensing Society (IEEE GRSS). As for previous years, the IADF TC organized a data fusion contest aiming at fostering new ideas and solutions for multisource studies. The 2015 edition of the contest proposed a multiresolution and multisensorial challenge involving extremely high-resolution RGB images and a three-dimensional (3-D) LiDAR point cloud. The competition was framed in two parallel tracks, considering 2-D and 3-D products, respectively. In this paper, we discuss the sci…
Sentinel-3/FLEX Biophysical Product Confidence Using Sentinel-2 Land-Cover Spatial Distributions
2021
The estimation of biophysical variables from remote sensing data raises important challenges in terms of the acquisition technology and its limitations. In this way, some vegetation parameters, such as chlorophyll fluorescence, require sensors with a high spectral resolution that constrains the spatial resolution while significantly increasing the subpixel land-cover heterogeneity. Precisely, this spatial variability often makes that rather different canopy structures are aggregated together, which eventually generates important deviations in the corresponding parameter quantification. In the context of the Copernicus program (and other related Earth Explorer missions), this article propose…
The Added-Value of Remotely-Sensed Soil Moisture Data for Agricultural Drought Detection in Argentina
2021
In countries where the economy relies mostly on agricultural-livestock activities, such as Argentina, droughts cause significant economic losses. Currently, the most-used drought indices by the Argentinian National Meteorological and Hydrological Services are based on field precipitation data, such as the standardized precipitation index (SPI) and the standardized precipitation evapotranspiration index (SPEI). In this article, we explored the performance of the satellite-based soil moisture agricultural drought index (SMADI) for agricultural drought detection in Argentina during 2010-2015, and compared it with the one from the standardized soil moisture anomalies (SSMA), SPI and SPEI (at on…
Multitemporal Mosaicing for Sentinel-3/FLEX Derived Level-2 Product Composites
2020
The increasing availability of remote sensing data raises important challenges in terms of operational data provision and spatial coverage for conducting global studies and analyses. In this regard, existing multitemporal mosaicing techniques are generally limited to producing spectral image composites without considering the particular features of higher-level biophysical and other derived products, such as those provided by the Sentinel-3 (S3) and Fluorescence Explorer (FLEX) tandem missions. To relieve these limitations, this article proposes a novel multitemporal mosaicing algorithm specially designed for operational S3-derived products and also studies its applicability within the FLEX…
Real Pragmatica sobre lo reparo dels danys que resulten de les Nullitats ques dihuen de les Sentencies, ab vots del Supremo Consell, y Reuisions de l…
1624
Datada la Pragmàtica en 24 de Febrer de 1624 i feta pública en la Ciutat de València el 15 de Març, per manament de D. Enrique de Avila y Guzman, Marqués de Povar Port. amb escut reial xil. Caplletra grav. Sign. : A4 Reclams
Memorial al Rey Nuestro Señor sobre que los muy Reverendo Reverendos, muy Ilustre, Ilustres, Nobles y Magnificos Diputados del fidelisimo Reyno de Va…
Prec. al tít.: Iesus, Maria, Ioseph Port. amb grav. xil. enmarcat Sign.: [ ]2, B-L2, M3 Comentaris envoltant el text Reclams