Showing 321 - 340 results of 788 for search '"observatories"', query time: 0.04s Refine Results
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    Star Formation in the Lopsided Galaxy Arp 291 by Irina S. Proshina, Dmitriy V. Oparin

    Published 2025-01-01
    “…We have investigated the star formation process taking place in the lopsided galaxy Arp 291, based on narrowband images in the H α , [N ii ] λ 6583, and [O iii ] λ 5007 emission lines, obtained using the modern tunable photometer MaNGaL at the Caucasus Mountain Observatory. We have diagnosed 30 star-forming (SF) regions by means of the Baldwin–Phillips–Terlevich method. …”
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    Very High Energy Solar Energetic Particle Events and Ground Level Enhancement Events: Forecasting and Alerts by N. Crosby, H. Mavromichalaki, O. Malandraki, M. Gerontidou, M. Karavolos, D. Lingri, P. Makrantoni, M. Papailiou, P. Paschalis, A. Tezari

    Published 2024-09-01
    “…From the space‐based approach, the HESPERIA UMASEP‐500 product, jointly developed within the framework of the EU HORIZON2020 HESPERIA project by the Universidad de Malaga, Spain and National Observatory of Athens, Greece, provides forecasts of GLE events and >500 MeV protons relying on GOES satellite Soft X‐Ray and high energy proton observations. …”
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    O inadmissível roubo da carta de alforria do nagô Pedro Allgayer: a escravidão em uma zona de imigração alemã (RS, séc. XIX) by Paulo Roberto Staudt Moreira, Miquéias Henrique Mugge

    Published 2013-01-01
    “…Starting from a trivial case portrayed in a legal document, our goal is to make this case study an efficient observatory that shows the slave society in the German colony of São Leopoldo in the eighteen hundreds.…”
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  7. 327

    Predicting Equatorial Ionospheric Convective Instability Using Machine Learning by D. Garcia, E. L. Rojas, D. L. Hysell

    Published 2023-12-01
    “…The data are obtained from the incoherent scatter radar at the Jicamarca Radio Observatory located in Lima, Peru. Our models map vertical plasma drifts, time, and solar activity to the occurrence and location of clusters of echoes telltale of ionospheric irregularities. …”
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    Le paysage de proximité à l’école, par des photographies répétées :un levier d’implication dans son territoire by Christine Vergnolle Mainar, Marie-Pierre Julien, Jean-Yves Léna, Anne Calvet, Raphaël Chalmeau

    Published 2016-12-01
    “…This was studied as part of a collaborative research project conducted with pupils in primary and middle school in the town of Vicdessos (Ariège, France), in connection with research done by the Observatoire homme-milieux (OHM) Pyrénées Haut-Vicdessos (Pyrénées Haut-Vicdessos Human-Environment Observatory). The activities and their subsequent analysis reveal the importance of working on the chronological filing of the photographs as well as the role of the discussions between pupils concerning possible divergences in the way of arranging the photographs.…”
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    On the Considerations of Using Near Real Time Data for Space Weather Hazard Forecasting by A. W. Smith, C. Forsyth, I. J. Rae, T. M. Garton, C. M. Jackman, M. Bakrania, R. M. Shore, G. S. Richardson, C. D. Beggan, M. J. Heyns, J. P. Eastwood, A. W. P. Thomson, J. M. Johnson

    Published 2022-07-01
    “…In this work we investigate the quality and continuity of the data that are available in Near‐Real‐Time (NRT) from the Advanced Composition Explorer and Deep Space Climate Observatory (DSCOVR) spacecraft. In general, the data available in NRT corresponds well with post‐processed data, however there are three main areas of concern: greater short‐term variability in the NRT data, occasional anomalous values and frequent data gaps. …”
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