Zobrazeno 1 - 10
of 290
pro vyhledávání: '"Wamsteker, W."'
Autor:
Wamsteker, W., Haubold, H. J.
Publikováno v:
Astrophysics and Space Science 305(2006)325-330
Pursuant to recommendations of the United Nations Conference on the Exploration and Peaceful Uses of Outer Space (UNISPACE III) and deliberations of the United Nations Committee on the Peaceful Uses of Outer Space (UNCOPUOS), annual UN/European Space
Externí odkaz:
http://arxiv.org/abs/physics/0604182
In this paper we consider the problem of the limits concerning the physical information that can be extracted from the analysis of one or more time series (light curves) typical of astrophysical objects. On the basis of theoretical considerations and
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410367
It is well-known that the noise associated with the collection of an astronomical image by a CCD camera is, in large part, Poissonian. One would expect, therefore, that computational approaches that incorporate this a priori information will be more
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409535
Autor:
Haubold, H. J., Wamsteker, W.
Publikováno v:
Advances in Space Research 34(2004)2178-2181
The UN/ESA Workshops on Basic Space Science is a long-term effort for the development of astronomy and regional and international co-operation in this field on a world wide basis, particularly in developing nations. The first four workshops in this s
Externí odkaz:
http://arxiv.org/abs/physics/0406117
Autor:
Wamsteker, W., Haubold, H. J.
Publikováno v:
Advances in Space Research 34(2004)2200-2202
The World Space Observatory/Ultraviolet (WSO/UV) represents a new mission implementation model for large space missions for astrophysics. The process has been brought up to enable, fully scientific needs driven, a logic to be applied to the demands f
Externí odkaz:
http://arxiv.org/abs/physics/0406116
Publikováno v:
Astron.Astrophys. 423 (2004) 1179-1186
We consider the estimation of the regularization parameter for the simultaneous deblurring of multiple noisy images via Tikhonov regularization. We approach the problem in three ways. We first reduce the problem to a single-image deblurring for which
Externí odkaz:
http://arxiv.org/abs/astro-ph/0405545
Publikováno v:
Astron.Astrophys. 416 (2004) 403-410
We consider the simultaneous deblurring of a set of noisy images whose point spread functions are different but known and spatially invariant, and the noise is Gaussian. Currently available iterative algorithms that are typically used for this type o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0311592
Autor:
Romano, P., Mathur, S., Turner, T. J., Kraemer, S. B., Crenshaw, D. M., Peterson, B. M., Pogge, R. W., Brandt, W. N., George, I. M., Horne, K., Kriss, G. A., Netzer, H., Shemmer, O., Wamsteker, W.
Publikováno v:
Astrophys.J. 602 (2004) 635-647
We present the intrinsic spectral energy distribution (SED) of the NLS1 Arakelian 564, constructed with contemporaneous data obtained during a multi-wavelength, multi-satellite observing campaign in 2000 and 2001. We compare it with that of the NLS1
Externí odkaz:
http://arxiv.org/abs/astro-ph/0311206
Publikováno v:
Astron.Astrophys.408:835-844,2003
In this second paper in a series dedicated to developing efficient numerical techniques for the deblurring Cosmic Microwave Background (CMB) maps, we consider the case of asymmetric point spread functions (PSF). Although conceptually this problem is
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309145