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Atmospheric aerosols influence the Earth's climate, primarily by affecting cloud formation and scattering visible radiation. However, aerosol-related physical processes in climate simulations are highly uncertain. Constraining these…

In recent years, there were studies on the omnipresence and structures of filaments in star-forming regions, and the role of their fragmentation in the process of star formation. However, only a few studies analysed the evolution of…

Astrophysics of Galaxies · Physics 2018-06-07 Roxana-Adela Chira

Modern Earth Observation (EO) missions generate massive volumes of imagery that challenge existing downlink and ground-processing capabilities, particularly for time-critical applications. This work investigates how a low Earth orbit (LEO)…

Networking and Internet Architecture · Computer Science 2026-04-08 Beatriz Soret , Antonio M. Mercado-Martínez , Antonio Jurado-Navas , Nicolai D. Lyholm , Marco Moretti , Petar Popovski , Israel Leyva-Mayorga

I describe the scenario of molecular cloud (MC) evolution that has emerged over the past decade or so. MCs can start out as cold atomic clouds formed by compressive motions in the warm neutral medium (WNM) of galaxies. Such motions can be…

Astrophysics of Galaxies · Physics 2010-09-22 Enrique Vazquez-Semadeni

Among all closed-shell species observed in molecular clouds, molecules with C$_{3v}$ symmetry play a crucial role, as their rotational spectroscopy allows them to behave as a gas thermometer. In the interstellar medium, methyl cyanide…

Astrophysics of Galaxies · Physics 2023-09-22 M. Ben Khalifa , P. J. Dagdigian , J. Loreau

We present Nobeyama 45m telescope C18O, 13CO, and 12CO(1-0) mapping observations towards an interstellar filament in the Taurus molecular cloud. We investigate the gas velocity structure along the filament and in its surrounding parent…

Astrophysics of Galaxies · Physics 2018-09-26 Doris Arzoumanian , Yoshito Shimajiri , Shu-ichiro Inutsuka , Tsuyoshi Inoue , Kengo Tachihara

The Euclid mission is a visionary project undertaken by the European Space Agency (ESA) to probe the universe's evolution and geometry by surveying the position and gravitational shape distortion of billions of galaxies. These observations…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-17 Davide Sciotti

Water droplets coalesce into larger ones in atmospheric clouds to form rain. But droplets on collision courses do not always coalesce due to the cushioning effects of the air between them. The extent to which these so-called hydrodynamic…

Fluid Dynamics · Physics 2022-04-19 R. V. Kearney , G. P. Bewley

We have extensively mapped a sample of dense molecular clouds (L1512, TMC-1C, L1262, Per 7, L1389, L1251E) in lines of HC3N, CH3OH, SO and C^{18}O. We demonstrate that a high degree of chemical differentiation is present in all of the…

The interstellar medium is threaded by a hierarchy of filaments from large scales (~ 100 pc) to small scales (~ 0.1pc). The masses and lengths of these nested structures may reveal important constraints for cloud formation and evolution,…

Astrophysics of Galaxies · Physics 2024-02-09 Jiancheng Feng , Rowan J. Smith , Alvaro Hacar , Susan E. Clark , Daniel Seifried

Being able to effectively identify clouds and monitor their evolution is one important step toward more accurate quantitative precipitation estimation and forecast. In this study, a new gradient-based cloud-image segmentation technique is…

Computer Vision and Pattern Recognition · Computer Science 2018-10-01 Negin Hayatbini , Kuo-lin Hsu , Soroosh Sorooshian , Yunji Zhang , Fuqing Zhang

Contrails have recently gained widespread attention due to their large and uncertain estimates of effective radiative forcing, i.e., warming effect on the planet, comparable to those of carbon dioxide. To study this aircraft-induced cloud…

Fluid Dynamics · Physics 2025-05-27 Tânia S. C. Ferreira , Juan J. Alonso , Catherine Gorlé

Clusters of galaxies, the largest collapsed structures in the Universe, are located at the intersection of extended filaments of baryons and dark matter. Cosmological accretion onto clusters through large scale filaments adds material at…

Context. The presence of clouds during observations with Imaging Atmospheric Cherenkov Telescopes can strongly affect the performance of the instrument due to additional absorption of light and scattering of light beyond the field of view…

Instrumentation and Methods for Astrophysics · Physics 2024-05-22 Natalia Żywucka , Julian Sitarek , Dorota Sobczyńska , Mario Pecimotika , Dario Hrupec , Dijana Dominis Prester , Lovro Pavletić , Saša Mićanović

Occlusions hinder point cloud frame alignment in LiDAR data, a challenge inadequately addressed by scene flow models tested mainly on occlusion-free datasets. Attempts to integrate occlusion handling within networks often suffer accuracy…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Jingze Chen , Junfeng Yao , Qiqin Lin , Lei Li

We present molecular line and dust continuum observations of a Planck-detected cold cloud, G074.11+00.11. The cloud consists of a system of curved filaments and a central star-forming clump. The clump is associated with several infrared…

The shape of the cold interstellar molecular gas is determined by several processes, including self-gravity, tidal force, turbulence, magnetic field, and galactic shear. Based on the 3D dust extinction map derived by Vergely et al., we…

Astrophysics of Galaxies · Physics 2024-08-27 Yi-Heng Xie , Guang-Xing Li , Bing-Qiu Chen

We define the molecular cloud properties of the Milky Way first quadrant using data from the JCMT CO(3-2) High Resolution Survey. We apply the Spectral Clustering for Interstellar Molecular Emission Segmentation (SCIMES) algorithm to…

The main objectives of the KM3NeT Collaboration are i) the discovery and subsequent observation of high-energy neutrino sources in the Universe and ii) the determination of the mass hierarchy of neutrinos. These objectives are strongly…

Instrumentation and Methods for Astrophysics · Physics 2016-07-27 S. Adrián-Martínez , M. Ageron , F. Aharonian , S. Aiello , A. Albert , F. Ameli , E. Anassontzis , M. Andre , G. Androulakis , M. Anghinolfi , G. Anton , M. Ardid , T. Avgitas , G. Barbarino , E. Barbarito , B. Baret , J. Barrios-Martí , B. Belhorma , A. Belias , E. Berbee , A. van den Berg , V. Bertin , S. Beurthey , V. van Beveren , N. Beverini , S. Biagi , A. Biagioni , M. Billault , M. Bond , R. Bormuth , B. Bouhadef , G. Bourlis , S. Bourret , C. Boutonnet , M. Bouwhuis , C. Bozza , R. Bruijn , J. Brunner , E. Buis , J. Busto , G. Cacopardo , L. Caillat , M. Calamai , D. Calvo , A. Capone , L. Caramete , S. Cecchini , S. Celli , C. Champion , R. Cherkaoui El Moursli , S. Cherubini , T. Chiarusi , M. Circella , L. Classen , R. Cocimano , J. A. B. Coelho , A. Coleiro , S. Colonges , R. Coniglione , M. Cordelli , A. Cosquer , P. Coyle , A. Creusot , G. Cuttone , A. D'Amico , G. De Bonis , G. De Rosa , C. De Sio , F. Di Capua , I. Di Palma , A. F. Díaz García , C. Distefano , C. Donzaud , D. Dornic , Q. Dorosti-Hasankiadeh , E. Drakopoulou , D. Drouhin , L. Drury , M. Durocher , T. Eberl , S. Eichie , D. van Eijk , I. El Bojaddaini , N. El Khayati , D. Elsaesser , A. Enzenhöfer , F. Fassi , P. Favali , P. Fermani , G. Ferrara , G. Frascadore , C. Filippidis , L. A. Fusco , T. Gal , S. Galatà , F. Garufi , P. Gay , M. Gebyehu , V. Giordano , N. Gizani , R. Gracia , K. Graf , T. Grégoire , G. Grella , R. Habel , S. Hallmann , H. van Haren , S. Harissopulos , T. Heid , A. Heijboer , E. Heine , S. Henry , J. J. Hernández-Rey , M. Hevinga , J. Hofestädt , C. M. F. Hugon , G. Illuminati , C. W. James , P. Jansweijer , M. Jongen , M. de Jong , M. Kadler , O. Kalekin , A. Kappes , U. F. Katz , P. Keller , G. Kieft , D. Kießling , E. N. Koffeman , P. Kooijman , A. Kouchner , V. Kulikovskiy , R. Lahmann , P. Lamare , A. Leisos , E. Leonora , M. Lindsey Clark , A. Liolios , C. D. Llorens Alvarez , D. Lo Presti , H. Löhner , A. Lonardo , M. Lotze , S. Loucatos , E. Maccioni , K. Mannheim , A. Margiotta , A. Marinelli , O. Mariş , C. Markou , J. A. Martínez-Mora , A. Martini , R. Mele , K. W. Melis , T. Michael , P. Migliozzi , E. Migneco , P. Mijakowski , A. Miraglia , C. M. Mollo , M. Mongelli , M. Morganti , A. Moussa , P. Musico , M. Musumeci , S. Navas , C. A. Nicolau , I. Olcina , C. Olivetto , A. Orlando , A. Papaikonomou , R. Papaleo , G. E. Păvălaş , H. Peek , C. Pellegrino , C. Perrina , M. Pfutzner , P. Piattelli , K. Pikounis , G. E. Poma , V. Popa , T. Pradier , F. Pratolongo , G. Pühlhofer , S. Pulvirenti , L. Quinn , C. Racca , F. Raffaelli , N. Randazzo , P. Rapidis , P. Razis , D. Real , L. Resvanis , J. Reubelt , G. Riccobene , C. Rossi , A. Rovelli , M. Saldaña , I. Salvadori , D. F. E. Samtleben , A. Sánchez García , A. Sánchez Losa , M. Sanguineti , A. Santangelo , D. Santonocito , P. Sapienza , F. Schimmel , J. Schmelling , V. Sciacca , M. Sedita , T. Seitz , I. Sgura , F. Simeone , I. Siotis , V. Sipala , B. Spisso , M. Spurio , G. Stavropoulos , J. Steijger , S. M. Stellacci , D. Stransky , M. Taiuti , Y. Tayalati , D. Tézier , S. Theraube , L. Thompson , P. Timmer , C. Tönnis , L. Trasatti , A. Trovato , A. Tsirigotis , S. Tzamarias , E. Tzamariudaki , B. Vallage , V. Van Elewyck , J. Vermeulen , P. Vicini , S. Viola , D. Vivolo , M. Volkert , G. Voulgaris , L. Wiggers , J. Wilms , E. de Wolf , K. Zachariadou , J. D. Zornoza , J. Zúñiga

The aim of this white paper is to briefly summarize some of the outstanding gaps in the observations and modeling of stellar flares, CMEs, and exoplanetary space weather, and to discuss how the theoretical and computational tools and…

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