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86 results on '"Erd, C."'

51. The Darwin-GENIE Experiment: An ESA-ESO Partnership

Author

Gondoin, Philippe, Absil, Olivier, Erd, C., Fridlund, Malcolm C., den Hartog, Roland H., Rando, Nicola, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2002

52. Stellar Coronae with XMM-Newton RGS II: X-ray Variability

Author

Audard, M., Gudel, M., Den Boggende, Aj, Brinkman, Ac, Den Herder, Jw, Kaastra, Js, Mewe, R., Raassen, Ajj, Vries, C., Behar, E., Cottam, J., Kahn, Sm, Paerels, Fbs, Peterson, Jm, Rasmussen, Ap, Sako, M., Branduardi-Raymont, G., Sakelliou, I., Erd, C., Giacconi, R., Serio, S., Stella, L., and Low Energy Astrophysics (API, FNWI)

Published
2001

55. Atmospheric Planetary Probes and Balloons in the Solar System

Author

Coustenis, A, primary, Atkinson, D, additional, Balint, T, additional, Beauchamp, P, additional, Atreya, S, additional, Lebreton, J-P, additional, Lunine, J, additional, Matson, D, additional, Erd, C, additional, Reh, K, additional, Spilker, T R, additional, Elliott, J, additional, Hall, J, additional, and Strange, N, additional

Published
2011
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64. 73P/Schwassmann-Wachmann 3-B observed from the optical ground station

Author

Ho, T.-M., Schulz, R., Erd, C., Martin, D., Oosterbroek, T., Peacock, A., Stankov, A., Stuewe, J., Verhoeve, P., Ho, T.-M., Schulz, R., Erd, C., Martin, D., Oosterbroek, T., Peacock, A., Stankov, A., Stuewe, J., and Verhoeve, P.

Abstract

Aims.In 2006 comet 73P/Schwassmann-Wachmann 3, which split in 1995 into five pieces, approached the Sun again with a swarm of new fragments. The same year in May, the conglomerate of sub-fragments from the original fragment B was observed with the S-Cam3 instrument mounted on the 1-m ESA Optical Ground Station (OGS) telescope in Tenerife, Spain. With a total FOV of ~876 km $\times$730 km and a spatial resolution of ~73 km/pixel, the S-Cam3 observations provided the possibility to examine dust fragmentation processes, as well as dust and gas outflow, within the first few hundred kilometres of the sub-fragment surfaces.

Published
2008
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65. Absolute timing of the Crab Pulsar at optical wavelengths with superconducting tunneling junctions

Author

Oosterbroek, T., de Bruijne, J. H. J., Martin, D., Verhoeve, P., Perryman, M. A. C., Erd, C., Schulz, R., Oosterbroek, T., de Bruijne, J. H. J., Martin, D., Verhoeve, P., Perryman, M. A. C., Erd, C., and Schulz, R.

Abstract

Aims.We have observed the Crab Pulsar in the optical with S-Cam, an instrument based on Superconducting Tunneling Junctions (STJs) with μs time resolution. Our aim was to study the delay between the radio and optical pulse.

Published
2006
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67. XMM-Newton observatory

Author

Jansen, F., primary, Lumb, D., additional, Altieri, B., additional, Clavel, J., additional, Ehle, M., additional, Erd, C., additional, Gabriel, C., additional, Guainazzi, M., additional, Gondoin, P., additional, Much, R., additional, Munoz, R., additional, Santos, M., additional, Schartel, N., additional, Texier, D., additional, and Vacanti, G., additional

Published
2001
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68. The Reflection Grating Spectrometer on board XMM-Newton

Author

den Herder, J. W., primary, Brinkman, A. C., additional, Kahn, S. M., additional, Branduardi-Raymont, G., additional, Thomsen, K., additional, Aarts, H., additional, Audard, M., additional, Bixler, J. V., additional, den Boggende, A. J., additional, Cottam, J., additional, Decker, T., additional, Dubbeldam, L., additional, Erd, C., additional, Goulooze, H., additional, Güdel, M., additional, Guttridge, P., additional, Hailey, C. J., additional, Al Janabi, K., additional, Kaastra, J. S., additional, de Korte, P. A. J., additional, van Leeuwen, B. J., additional, Mauche, C., additional, McCalden, A. J., additional, Mewe, R., additional, Naber, A., additional, Paerels, F. B., additional, Peterson, J. R., additional, Rasmussen, A. P., additional, Rees, K., additional, Sakelliou, I., additional, Sako, M., additional, Spodek, J., additional, Stern, M., additional, Tamura, T., additional, Tandy, J., additional, de Vries, C. P., additional, Welch, S., additional, and Zehnder, A., additional

Published
2001
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69. First light measurements with the XMM-Newton reflection grating spectrometers: Evidence for an inverse first ionisation potential effect and anomalous Ne abundance in the Coronae of HR 1099

Author

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

Published
2001
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75. Soft photon production in 450 GeV/c p-Be collisions.

Author

Antos, J., Beker, H., Brons, S., Bussmann, K., Dagan, S., Drees, A., Erd, C., Esten, M., Fabjan, C., Glässel, P., Goerlach, U., Hedberg, V., Lissauer, D., Mazzoni, M., McCubbin, N., Neubert, M., Nevski, P., Olsen, L., Pfeiffer, A., and Ray, A.

Abstract

We have measured the inclusive p spectra of soft photons produced at central and backward rapidities in 450 GeV/c p-Be collisions down to 1 MeV/c in transverse momentum. In the region 1< p<20 MeV/c an excess of photons over those expected from hadronic decays is observed. This excess is comparable, within systematic errors, with estimates of direct photons produced via hadronic bremsstrahlung. An upper limit is derived on the presence of additional sources of direct photons at small transverse momentum. [ABSTRACT FROM AUTHOR]

Published
1993
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77. Fundamental physics with the laser astrometric test of relativity

Author

Turyshev, S. G., Dittus, H., Lämmerzahl, 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., Páramos, J., Christophe, B., Foulon, B., Touboul, P., Bouyer, P., Damour, T., Salomon, C., Reynaud, S., Brillet, A., Bondu, F., Mangin, J. -F, Samain, E., Bertotti, B., Iess, L., Erd, C., Grenouilleau, J. C., Dario Izzo, Rathke, A., Asmar, S. W., Colavita, M., Gürsel, Y., Hemmati, H., Shao, M., Williams, J. G., Nordtvedt Jr, K. L., Shapiro, I., Reasenberg, R., Drever, R. W. P., Degnan, J., Plowman, J. E., Hellings, R., and Murphy Jr, T. W.

80. GENIEsim: The GENIE simulation software

Author

Absil, O., Den Hartog, R., Erd, C., Gondoin, P., Lisa Kaltenegger, Fridlund, M., Rando, N., Wilhelm, R., Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

81. The Ground-based European Nulling Interferometry Experiment (Darwin-GENIE)

Author

Gondoin, P., Absil, O., Den Hartog, R., Lisa Kaltenegger, Eiroa, C., Erd, C., Fridlund, M., Karlsson, A., Peacock, A., Sodnik, Z., Volonte, S., Wilhelm, R., Schoeller, M., Glindemann, A., Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

82. Stellar coronae with XMM-Newton RGS I. Coronal structure

Author

Güdel, M., Audard, M., den Boggende, A.J., Brinkman, A.C., den Herder, J.W., 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., Erd, C., Giacconi, R., Serio, S., Stella, L., and Low Energy Astrophysics (API, FNWI)

83. SMART-1 Impact Ground-based campaign

Author

Ehrenfreund, P., Foing, B. H., Veillet, C., Wooden, D., Gurvits, L., Cook, A. C., Koschny, D., Biver, N., Buckley, D., Ortiz, J. L., Di Martino, M., Dantowitz, R., Cooke, B., Reddy, V., Wood, M., Vennes, S., Albert, L., Sugita, S., Kasuga, T., Meech, K., Tokunaga, A., Lucey, P., Krots, A., Palle, E., Montanes, P., Trigo-Rodriguez, J., Cremonese, G., Barbieri, C., Ferri, F., Mangano, V., Bhandari, N., Chandrasekhar, T., Kawano, N., Matsumoto, K., Taylor, C., Hanslmeyer, A., Vaubaillon, J., Schultz, R., Erd, C., Gondoin, P., Levasseur-Regourd, A.-C., Khodachenko, M., Rucker, H., Burchell, M., Cole, M., Svedhem, H., Rossi, A., Colaprete, T., Goldstein, D., Schultz, P. H., Alkalai, L., Banerdt, B., Kato, M., Graham, F., Ball, A., Taylor, E., Baldwin, E., Berezhnoy, A., Lammer, H., Talevi, M., Landeau-Constantin, J., Weyhe, B. v., Ansari, S., Lawton, C., Lebreton, J. P., Friedman, L., Betts, B., Buoso, M., Williams, S., Cirou, A., David, L., Sanguy, O., Burke, J. D., Maley, P. D., de Morais, V. M., Marchis, F., Munoz, J. M. H., Dighay, J.-L., Ehrenfreund, P., Foing, B. H., Veillet, C., Wooden, D., Gurvits, L., Cook, A. C., Koschny, D., Biver, N., Buckley, D., Ortiz, J. L., Di Martino, M., Dantowitz, R., Cooke, B., Reddy, V., Wood, M., Vennes, S., Albert, L., Sugita, S., Kasuga, T., Meech, K., Tokunaga, A., Lucey, P., Krots, A., Palle, E., Montanes, P., Trigo-Rodriguez, J., Cremonese, G., Barbieri, C., Ferri, F., Mangano, V., Bhandari, N., Chandrasekhar, T., Kawano, N., Matsumoto, K., Taylor, C., Hanslmeyer, A., Vaubaillon, J., Schultz, R., Erd, C., Gondoin, P., Levasseur-Regourd, A.-C., Khodachenko, M., Rucker, H., Burchell, M., Cole, M., Svedhem, H., Rossi, A., Colaprete, T., Goldstein, D., Schultz, P. H., Alkalai, L., Banerdt, B., Kato, M., Graham, F., Ball, A., Taylor, E., Baldwin, E., Berezhnoy, A., Lammer, H., Talevi, M., Landeau-Constantin, J., Weyhe, B. v., Ansari, S., Lawton, C., Lebreton, J. P., Friedman, L., Betts, B., Buoso, M., Williams, S., Cirou, A., David, L., Sanguy, O., Burke, J. D., Maley, P. D., de Morais, V. M., Marchis, F., Munoz, J. M. H., and Dighay, J.-L.

Abstract

Based on predictions of impact magnitude and cloud ejecta dynamics, we organized a SMART-1 ground-based observation campaign to perform coordinated measurements of the impact. Results from the coordinated multi-site campaign will be discussed.

84. SMART-1 Impact Ground-based campaign

Author

Ehrenfreund, P., Foing, B. H., Veillet, C., Wooden, D., Gurvits, L., Cook, A. C., Koschny, D., Biver, N., Buckley, D., Ortiz, J. L., Di Martino, M., Dantowitz, R., Cooke, B., Reddy, V., Wood, M., Vennes, S., Albert, L., Sugita, S., Kasuga, T., Meech, K., Tokunaga, A., Lucey, P., Krots, A., Palle, E., Montanes, P., Trigo-Rodriguez, J., Cremonese, G., Barbieri, C., Ferri, F., Mangano, V., Bhandari, N., Chandrasekhar, T., Kawano, N., Matsumoto, K., Taylor, C., Hanslmeyer, A., Vaubaillon, J., Schultz, R., Erd, C., Gondoin, P., Levasseur-Regourd, A.-C., Khodachenko, M., Rucker, H., Burchell, M., Cole, M., Svedhem, H., Rossi, A., Colaprete, T., Goldstein, D., Schultz, P. H., Alkalai, L., Banerdt, B., Kato, M., Graham, F., Ball, A., Taylor, E., Baldwin, E., Berezhnoy, A., Lammer, H., Talevi, M., Landeau-Constantin, J., Weyhe, B. v., Ansari, S., Lawton, C., Lebreton, J. P., Friedman, L., Betts, B., Buoso, M., Williams, S., Cirou, A., David, L., Sanguy, O., Burke, J. D., Maley, P. D., de Morais, V. M., Marchis, F., Munoz, J. M. H., Dighay, J.-L., Ehrenfreund, P., Foing, B. H., Veillet, C., Wooden, D., Gurvits, L., Cook, A. C., Koschny, D., Biver, N., Buckley, D., Ortiz, J. L., Di Martino, M., Dantowitz, R., Cooke, B., Reddy, V., Wood, M., Vennes, S., Albert, L., Sugita, S., Kasuga, T., Meech, K., Tokunaga, A., Lucey, P., Krots, A., Palle, E., Montanes, P., Trigo-Rodriguez, J., Cremonese, G., Barbieri, C., Ferri, F., Mangano, V., Bhandari, N., Chandrasekhar, T., Kawano, N., Matsumoto, K., Taylor, C., Hanslmeyer, A., Vaubaillon, J., Schultz, R., Erd, C., Gondoin, P., Levasseur-Regourd, A.-C., Khodachenko, M., Rucker, H., Burchell, M., Cole, M., Svedhem, H., Rossi, A., Colaprete, T., Goldstein, D., Schultz, P. H., Alkalai, L., Banerdt, B., Kato, M., Graham, F., Ball, A., Taylor, E., Baldwin, E., Berezhnoy, A., Lammer, H., Talevi, M., Landeau-Constantin, J., Weyhe, B. v., Ansari, S., Lawton, C., Lebreton, J. P., Friedman, L., Betts, B., Buoso, M., Williams, S., Cirou, A., David, L., Sanguy, O., Burke, J. D., Maley, P. D., de Morais, V. M., Marchis, F., Munoz, J. M. H., and Dighay, J.-L.

Abstract

Based on predictions of impact magnitude and cloud ejecta dynamics, we organized a SMART-1 ground-based observation campaign to perform coordinated measurements of the impact. Results from the coordinated multi-site campaign will be discussed.

85. Hard X- and γ-ray measurements with a 3×3×2mm3 CdZnTe detector

Author

Owens, Alan, Buslaps, T., Erd, C., Graafsma, H., Lumb, D., and Welter, E.

Subjects
*SEMICONDUCTORS, *DETECTORS, *ELECTRIC conductivity, *SOLID state electronics
Abstract

Abstract: We report the results of a series of X- and γ-ray measurements on a , 2mm thick CdZnTe detector carried out at the HASYLAB and ESRF synchrotron radiation facilities. The detector energy response function was found to be linear over the energy range 10–100keV with an average rms non-linearity of 0.6%, consistent with statistics. Under full area illumination, the FWHM energy resolution was 270eV at 5.9keV and rises to 930eV at 59.54keV. Under pencil beam illumination, the measured energy resolution at 10keV was 310eV FWHM and rises to ∼1000eV at 100keV. At 60keV the resolution was found to be ∼30% lower than that measured under uniform illumination, indicating a degree of non-uniform crystallinity and stoichiometry in the bulk. For energies <50keV, the measured energy-loss spectra show symmetric photopeaks, becoming increasing tailed at higher energies due to hole trapping. Using risetime discrimination (RTD) to filter out events due to holes, it was found that the shape of the photopeaks could be substantially improved at high energies, albeit at the expense of photopeak efficiency. In fact, the relative number of counts in photopeak, dropped from ∼90% at 10keV to ∼15% at 100keV. The results show that a combination of low-noise front-end architecture and RTD leads to very good performances below, say, 100keV, but above this energy, other techniques (e.g., bi-parametric corrections or single carrier sensing techniques) need to be employed if spectrometric performance is to be maintained. [Copyright &y& Elsevier]

Published
2006
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86. The search for worlds like our own.

Author

Fridlund M, Eiroa C, Henning T, Herbst T, Lammer H, Léger A, Liseau R, Paresce F, Penny A, Quirrenbach A, Röttgering H, Selsis F, White GJ, Absil O, Defrère D, Hanot C, Stam D, Schneider J, Tinetti G, Karlsson A, Gondoin P, den Hartog R, D'Arcio L, Stankov AM, Kilter M, Erd C, Beichman C, Coulter D, Danchi W, Devirian M, Johnston KJ, Lawson P, Lay OP, Lunine J, and Kaltenegger L

Subjects
Humans, Time Factors, Atmosphere, Life, Planets, Research Design, Solar System
Abstract

The direct detection of Earth-like exoplanets orbiting nearby stars and the characterization of such planets-particularly, their evolution, their atmospheres, and their ability to host life-constitute a significant problem. The quest for other worlds as abodes of life has been one of mankind's great questions for several millennia. For instance, as stated by Epicurus approximately 300 BC: "Other worlds, with plants and other living things, some of them similar and some of them different from ours, must exist." Demokritos from Abdera (460-370 BC), the man who invented the concept of indivisible small parts-atoms-also held the belief that other worlds exist around the stars and that some of these worlds may be inhabited by life-forms. The idea of the plurality of worlds and of life on them has since been held by scientists like Johannes Kepler and William Herschel, among many others. Here, one must also mention Giordano Bruno. Born in 1548, Bruno studied in France and came into contact with the teachings of Nicolas Copernicus. He wrote the book De l'Infinito, Universo e Mondi in 1584, in which he claimed that the Universe was infinite, that it contained an infinite amount of worlds like Earth, and that these worlds were inhabited by intelligent beings. At the time, this was extremely controversial, and eventually Bruno was arrested by the church and burned at the stake in Rome in 1600, as a heretic, for promoting this and other equally confrontational issues (though it is unclear exactly which idea was the one that ultimately brought him to his end). In all the aforementioned cases, the opinions and results were arrived at through reasoning-not by experiment. We have only recently acquired the technological capability to observe planets orbiting stars other than 6 our Sun; acquisition of this capability has been a remarkable feat of our time. We show in this introduction to the Habitability Primer that mankind is at the dawning of an age when, by way of the scientific method and 21(st)-century technology, we will be able to answer this fascinating controversial issue that has persisted for at least 2500 years.

Published
2010
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