Results 11 to 20 of about 595,327 (300)

Gravitational observatories

Journal of High Energy Physics, 2023
Abstract We consider four-dimensional general relativity with vanishing cosmological constant defined on a manifold with a boundary. In Lorentzian signature, the timelike boundary is of the form σ × ℝ, with σ a spatial two-manifold that we take to be either flat or S2. In Euclidean signature we take the boundary to be S2 × S1.
Dionysios Anninos, Damián A. Galante, Chawakorn Maneerat   +2 more
openaire   +5 more sources

The Carnegie Supernova Project. I. Third Photometry Data Release of Low-redshift Type Ia Supernovae and Other White Dwarf Explosions [PDF]

, 2017
We present final natural-system optical (ugriBV) and near-infrared (YJH) photometry of 134 supernovae (SNe) with probable white dwarf progenitors that were observed in 2004-2009 as part of the first stage of the Carnegie Supernova Project (CSP-I).
Anais, Jorge, Boldt, Luis, Burns, Christopher R., Busta, Luis, Campillay, Abdo, Castellón, Sergio, Contreras, Carlos, DePoy, D.L., Filippenko, Alexei V., Folatelli, Gaston, Freedman, Wendy L., González, Consuelo, Hamuy, Mario, Hsiao, Eric Y., Krisciunas, Kevin, Krzeminski, Wojtek, Li, Weidong, Madore, Barry F., Marshall, Jennifer L., Morrell, Nidia Irene, Persson, Sven Eric, Phillips, M. M., Rheault, Jean Philippe, Roth, Miguel, Salgado, Francisco, Serón, Jacqueline, Stritzinger, Maximilian D., Suntzeff, Nicholas B., Torres, Simón, Villanueva, Steven   +29 more
core   +5 more sources

Cosmological observatories [PDF]

Classical and Quantum Gravity
Abstract We study the static patch of de Sitter space in the presence of a timelike boundary. We impose that the conformal class of the induced metric and the trace of the extrinsic curvature, K, are fixed at the boundary. We present the thermodynamic structure of de Sitter space subject to these boundary conditions, for static and ...
Dionysios Anninos, Damián A Galante, Chawakorn Maneerat   +2 more
openaire   +4 more sources

Using DPSIR framework for the implementation of wetlands observatory: case study Sebkhates of Aures wetlands complex (Northerneast, Algeria) [PDF]

Present Environment and Sustainable Development
Wetlands are present within intricate ecological settings, exhibiting dynamic changes over time and across different areas with regard to their functional and structural diversity.
Imene BENZINA, Abdelkrim Si BACHIR, Abdelkrim ARAR, Christian PERENNOU, Anis GUELMAMI   +4 more
doaj   +1 more source

Running a distributed virtual observatory: US Virtual Astronomical Observatory operations [PDF]

, 2012
Operation of the US Virtual Astronomical Observatory shares some issues with modern physical observatories, e.g., intimidating data volumes and rapid technological change, and must also address unique concerns like the lack of direct control of the ...
Berriman, G. Bruce, Hanisch, Robert J., McGlynn, Thomas A., Thakar, Aniruddha R.   +3 more
core   +3 more sources

Les entretiens d’autoconfrontation et de remise en situation par les traces matérielles et le programme de recherche « cours d’action »

Revue d'anthropologie des connaissances, 2010
The development of the course-of-action research program has included both the creation of methods of data construction and the transformation of methods belonging to other research programs.
Jacques Theureau
doaj   +1 more source

Science Potential of a Deep Ocean Antineutrino Observatory [PDF]

, 2006
This paper presents science potential of a deep ocean antineutrino observatory under development at Hawaii. The observatory design allows for relocation from one site to another.
Aharmin, Aliu, Anderson, Apollonio, Araki, Araki, Ashie, Avilez, Bandyopadhyay, Bandyopadhyay, Dye, Dye, Eder, Herndon, Hollenback, Krauss, Learned, Marx, Minakata, Mohapatra, Raghavan, Rothschild, S.T. Dye, Turcotte   +23 more
core   +2 more sources

Optimized UVC-based antifouling system for moored applications

Frontiers in Marine Science
Biofouling, the unwanted accumulation of marine organisms on submerged structures, significantly compromises the quality of scientific data acquisition.
Robert Mars, Bennet Krebs, Mathis Bjoerner, Marialena Christopoulou, Oliver Zielinski   +4 more
doaj   +1 more source

Robotic observation pipeline for small bodies in the solar system based on open-source software and commercially available telescope hardware

Frontiers in Astronomy and Space Sciences, 2022
The observation of small bodies in the Space Environment is an ongoing important task in astronomy. While nowadays new objects are mostly detected in larger sky surveys, several follow-up observations are usually needed for each object to improve the ...
Tobias Hoffmann, Tobias Hoffmann, Matti Gehlen, Thorsten Plaggenborg, Gerhard Drolshagen, Theresa Ott, Jutta Kunz, Toni Santana-Ros, Toni Santana-Ros, Marcin Gedek, Rafał Reszelewski, Michał Żołnowski, Björn Poppe   +12 more
doaj   +1 more source

Rendre visible les impacts des pesticides du soja : contributions et limites d’un observatoire de science citoyenne à Santarém, Amazonie brésilienne

VertigO, 2021
Although Brazil is among the world's largest consumers of pesticides, their impacts on local populations have struggled to emerge as a public problem due to a political context that is particularly favourable to industrial agriculture.
Emilie Coudel, Stéphanie Nasuti, Danielle Wagner Silva, Marie-Paule Bonnet, Mariana Piva, Beatriz Abreu dos Santos, Ricardo Folhes, Vincent Bonnal, Valéria Fechine, Denise Lima, Carlos José Sousa Passos, Txai Mitt Schwamborn, Ione Nakamura, Gracivane Rodrigues de Moura   +13 more
doaj   +1 more source