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Your search keyword '"Erd, C."' showing total 5 results
Start Over Author "Erd, C." Topic physics::space physics
5 results on '"Erd, C."'

1. Jupiter Icy Moons Explorer (JUICE): Science Objectives, Mission and Instruments (abstract)

Author

Gurvits, L., Plaut, J.J., Barabash, S., Bruzzone, L., Dougherty, M., Erd, C., Fletcher, L., Gladstone, R., Grasset, O., Hartogh, P., Hussmann, H., Iess, L., Jaumann, R., Langevin, Y., Palumbo, P., Piccioni, G., Titov, D., and Wahlund, J.E.

Subjects
Physics::Space Physics, Astrophysics::Earth and Planetary Astrophysics, Physics::Geophysics
Abstract

The JUpiter ICy Moons Explorer (JUICE) is a European Space Agency mission that will fly by and observe the Galilean satellites Europa, Ganymede and Callisto, characterize the Jovian system in a lengthy Jupiter-orbit phase, and ultimately orbit Ganymede for in-depth studies of habitability, evolution and the local environment [1].

Published
2014

2. Jupiter Icy moons Explorer (JUICE): An ESA L-Class mission cadidate to the Jupiter system

Author

Dougherty, M. K., Grasset, O., Erd, C., Titov, D., Bunce, E., Coustenis, A., Blanc, M., Coates, A., Drossart, P., Fletcher, L., Hussmann, H., Jaumann, Ralf, Krupp, N., Prieto-Ballesteros, O., Tortora, P., Tosi, F., and Van Hoolst, T.

Subjects
Planetengeologie, icy moons, Jupiter, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, JUICE
Abstract

The discovery of four large moons orbiting around Jupiter by Galileo Galilei four hundred years ago spurred the Copernican Revolution and forever changed our view of the Solar System and universe. Today, Jupiter is seen as the archetype for giant planets in our Solar System as well as for the numerous giant planets known to orbit other stars. In many respects, and in all their complexities, Jupiter and its diverse satellites form a mini-Solar System. By investigating this system, and thereby unravelling the history of its evolution, from initial formation of the planet to the development of its satellite system, we will gain a general understanding of how gas giant planets and their satellite systems form and evolve and of how our Solar System works.

Published
2012

3. Fundamental Physics with the Laser Astrometric Test Of Relativity

Author

LATOR Collaboration, Turyshev, S. G., Dittus, H., Shao, M., Nordtvedt, Jr., K. L., Laemmerzahl, C., Theil, S., Ertmer, W., Rasel, E., Foerstner, R., Johann, U., Klioner, S., Soffel, M., Dachwald, B., Seboldt, W., Perlick, V., Sandford, M. C. W., Bingham, R., Kent, B., Sumner, T. J., Bertolami, O., Paramos, J., Christophe, B., Foulon, B., Touboul, P., Bouyer, P., Damour, T., Reynaud, S., Salomon, C., Brillet, A., Bondu, F., Mangin, J. -F., Samain, E., Erd, C., Grenouilleau, J. C., Izzo, D., Rathke, A., Asmar, S. W., Colavita, M., Gursel, Y., Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), ONERA - The French Aerospace Lab [Châtillon], ONERA-Université Paris Saclay (COmUE), laboratoire Charles Fabry de l'Institut d'Optique / Optique atomique, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Institut des Hautes Etudes Scientifiques (IHES), IHES, Laboratoire Kastler Brossel (LKB (Jussieu)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel (LKB (Lhomond)), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Jet Propulsion Laboratory ( JPL ), NASA-California Institute of Technology ( CALTECH ), ONERA - The French Aerospace Lab ( Chatillon ), ONERA, Laboratoire Charles Fabry de l'Institut d'Optique ( LCFIO ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -Institut d'Optique Graduate School ( IOGS ) -Centre National de la Recherche Scientifique ( CNRS ), Institut des Hautes Etudes Scientifiques ( IHES ), Laboratoire Kastler Brossel ( LKB (Jussieu) ), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris ( FRDPENS ), Centre National de la Recherche Scientifique ( CNRS ) -École normale supérieure - Paris ( ENS Paris ) -Centre National de la Recherche Scientifique ( CNRS ) -École normale supérieure - Paris ( ENS Paris ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Kastler Brossel ( LKB (Lhomond) ), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux ( ARTEMIS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de la Côte d'Azur, Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Institut des Hautes Études Scientifiques (IHES), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics::Space Physics, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), General Relativity and Quantum Cosmology, [ PHYS.GRQC ] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc]
Abstract

The Laser Astrometric Test Of Relativity (LATOR) is a joint European-U.S. Michelson-Morley-type experiment designed to test the pure tensor metric nature of gravitation - a fundamental postulate of Einstein's theory of general relativity. By using a combination of independent time-series of highly accurate gravitational deflection of light in the immediate proximity to the Sun, along with measurements of the Shapiro time delay on interplanetary scales (to a precision respectively better than 0.1 picoradians and 1 cm), LATOR will significantly improve our knowledge of relativistic gravity. The primary mission objective is to i) measure the key post-Newtonian Eddington parameter \gamma with accuracy of a part in 10^9. (1-\gamma) is a direct measure for presence of a new interaction in gravitational theory, and, in its search, LATOR goes a factor 30,000 beyond the present best result, Cassini's 2003 test. The mission will also provide: ii) first measurement of gravity's non-linear effects on light to ~0.01% accuracy; including both the Eddington \beta parameter and also the spatial metric's 2nd order potential contribution (never measured before); iii) direct measurement of the solar quadrupole moment J2 (currently unavailable) to accuracy of a part in 200 of its expected size; iv) direct measurement of the "frame-dragging" effect on light by the Sun's gravitomagnetic field, to 1% accuracy. LATOR's primary measurement pushes to unprecedented accuracy the search for cosmologically relevant scalar-tensor theories of gravity by looking for a remnant scalar field in today's solar system. We discuss the mission design of this proposed experiment., Comment: 8 pages, 9 figures; invited talk given at the 2005 ESLAB Symposium "Trends in Space Science and Cosmic Vision 2020," 19-21 April 2005, ESTEC, Noodrwijk, The Netherlands

Published
2004

4. Stellar Coronae with \textit{XMM-Newton} RGS. II. X-ray Variability

Author

Audard, M., Guedel, M., Boggende, A. J. den, Brinkman, A. C., Herder, J. W. den, Kaastra, J. S., Mewe, R., Raassen, A. J. J., de Vries, C., Behar, E., Cottam, J., Kahn, S. M., Paerels, F. B. S., Peterson, J. M., Rasmussen, A. P., Sako, M., Branduardi-Raymont, G., Sakelliou, I., and Erd, C.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Physics::Space Physics, FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

First results from high-resolution coronal spectroscopy of flares with the Reflection Grating Spectrometers on board the \textit{XMM-Newton} satellite are reviewed. Rotational modulation in the X-ray light curve of HR 1099 is discussed. Results from time-dependent spectroscopy of flares in the active stars HR 1099, AB Dor, YY Gem are also presented. Variations in the shape of the emission measure distributions, in the abundances and in the average density of the cool plasma are discussed., To appear in Proc. of "X-ray astronomy 2000",(Palermo Sep. 2000), Eds. R. Giacconi, L. Stella, S. Serio, ASP Conf. Series, in press

Published
2000

5. Stellar Coronae with \textit{XMM-Newton} RGS. I. Coronal Structure

Author

Guedel, M., Audard, M., Boggende, A. J. den, Brinkman, A. C., Herder, J. W. den, Kaastra, J. S., Mewe, R., Raassen, A. J. J., de Vries, C., Behar, E., Cottam, J., Kahn, S. M., Paerels, F. B. S., Peterson, J. M., Rasmussen, A. P., Sako, M., Branduardi-Raymont, G., Sakelliou, I., and Erd, C.

Subjects
Astrophysics (astro-ph), Physics::Space Physics, FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

First results from high-resolution coronal spectroscopy with the {\it XMM-Newton} Reflection Grating Spectrometers (RGS) are reviewed. Five stellar systems (HR 1099, Capella, Procyon, YY Gem, AB Dor) have been observed. The emphasis of the present paper is on overall coronal structure. Elemental abundances in {\it active stars} are found to be `anomalous' in the sense that they tend to increase with increasing First Ionization Potential (FIP - i.e., signifying an inverse FIP effect). Coronal densities are measured at levels of a few times $10^{10}$ cm$^{-3}$ for cooler plasma, although there are indications for very high densities in the hotter plasma components., To appear in Proc. of "X-ray astronomy 2000",(Palermo Sep. 2000), Eds. R. Giacconi, L. Stella, S. Serio, ASP Conf. Series, in press

Published
2000

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