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Autor:
Oosterbroek, T., Cognard, I., Golden, A., Verhoeve, P., Martin, D. D. E., Erd, C., Schulz, R., Stuewe, J. A., Stankov, A., Ho, T.
The Crab pulsar emits across a large part of the electromagnetic spectrum. Determining the time delay between the emission at different wavelengths will allow to better constrain the site and mechanism of the emission. We have simultaneously observed
Externí odkaz:
http://arxiv.org/abs/0806.3634
Autor:
Oosterbroek, T., de Bruijne, J. H. J., Martin, D., Verhoeve, P., Perryman, M. A. C., Erd, C., Schulz, R.
We have observed the Crab Pulsar in the optical with S-Cam, an instrument based on Superconducting Tunneling Junctions (STJs) with $\mu$s time resolution. Our aim was to study the delay between the radio and optical pulse. The Crab Pulsar was observe
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606146
Autor:
The Pioneer Explorer Collaboration, Dittus, H., Turyshev, S. G., Lämmerzahl, C., Theil, S., Foerstner, R., Johann, U., Ertmer, W., Rasel, E., Dachwald, B., Seboldt, W., Hehl, F. W., Kiefer, C., Blome, H. -J., Kunz, J., Giulini, D., Bingham, R., Kent, B., Sumner, T. J., Bertolami, O., Páramos, J., Rosales, J. L., Christophe, B., Foulon, B., Touboul, P., Bouyer, P., Reynaud, S., Brillet, A., Bondu, F., Samain, E., de Matos, C. J., Erd, C., Grenouilleau, J. C., Izzo, D., Rathke, A., Anderson, J. D., Asmar, S. W., Lau, E. L., Nieto, M. M., Mashhoon, B.
Publikováno v:
ESA Spec.Publ. 588 (2005) 3-10
The Pioneer 10 and 11 spacecraft yielded the most precise navigation in deep space to date. These spacecraft had exceptional acceleration sensitivity. However, analysis of their radio-metric tracking data has consistently indicated that at heliocentr
Externí odkaz:
http://arxiv.org/abs/gr-qc/0506139
Autor:
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.
Publikováno v:
ESA Spec.Publ. 588 (2005) 11-18
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
Externí odkaz:
http://arxiv.org/abs/gr-qc/0506104
We report the discovery of narrow X-ray absorption lines from the low-mass X-ray binary MXB1659-298 during an XMM-Newton observation in 2001 February. The 7.1 hr orbital cycle is clearly evident with narrow X-ray eclipses preceded by intense dipping
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109417
Autor:
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., Erd, C.
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 pa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011573
Autor:
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., Erd, C.
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
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011574
Autor:
Brinkman, A. C., Behar, E., Guedel, M., Audard, M., Boggende, A. J. F. den, Branduardi-Raymont, G., Cottam, J., Erd, C., Herder, J. W. den, Jansen, F., Kaastra, J. S., Kahn, S. M., Mewe, R., Paerels, F. B. S., Peterson, J. R., Rasmussen, A. P., Sakelliou, I., de Vries, C.
Publikováno v:
Astron.Astrophys. 365 (2001) L324
The RS CVn binary system HR 1099 was extensively observed by the XMM-Newton observatory in February 2000 as its first-light target. A total of 570 ks of exposure time was accumulated with the Reflection Grating Spectrometers (RGS). The integrated X-r
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011018
Publikováno v:
Astron.Astrophys.365:L277,2001
We present initial results from observations of the low-mass X-ray binary EXO 0748-67 with the Reflection Grating Spectrometer on board the XMM-Newton Observatory. The spectra exhibit discrete structure due to absorption and emission from ionized neo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010659