Zobrazeno 1 - 10
of 1 970
pro vyhledávání: '"Witte, S."'
Autor:
McDonald, J. I., Witte, S. J.
Ray tracing plays a vital role in black hole imaging, modeling the emission mechanisms of pulsars, and deriving signatures from physics beyond the Standard Model. In this work we focus on one specific application of ray tracing, namely, predicting ra
Externí odkaz:
http://arxiv.org/abs/2309.08655
Publikováno v:
JCAP 03 (2019) 027
Assuming axion-like particles account for the entirety of the dark matter in the Universe, we study the possibility of detecting their decay into photons at radio frequencies. We discuss different astrophysical targets, such as dwarf spheroidal galax
Externí odkaz:
http://arxiv.org/abs/1811.08436
We demonstrate a novel imaging approach and associated reconstruction algorithm for far-field coherent diffractive imaging, based on the measurement of a pair of laterally sheared diffraction patterns. The differential phase profile retrieved from su
Externí odkaz:
http://arxiv.org/abs/1802.07630
Wavefront sensors are an important tool to characterize coherent beams of extreme ultraviolet radiation. However, conventional Hartmann-type sensors do not allow for independent wavefront characterization of different spectral components that may be
Externí odkaz:
http://arxiv.org/abs/1712.04234
Autor:
Deuzeman, M J, Stodolna, A S, Leerssen, E E B, Antoncecchi, A, Spook, N, Kleijntjens, T, Versluis, J, Witte, S, Eikema, K S E, Ubachs, W, Hoekstra, R, Versolato, O O
The ablation of solid tin surfaces by an 800-nanometer-wavelength laser is studied for a pulse length range from 500 fs to 4.5 ps and a fluence range spanning 0.9 to 22 J/cm^2. The ablation depth and volume are obtained employing a high-numerical-ape
Externí odkaz:
http://arxiv.org/abs/1701.01006
Publikováno v:
Optica 3 (10), 1122-1125 (2016)
Coherent extreme ultraviolet (XUV) radiation produced by table-top high-harmonic generation (HHG) sources provides a wealth of possibilities in research areas ranging from attosecond physics to high resolution coherent imaging. However, it remains ch
Externí odkaz:
http://arxiv.org/abs/1607.02386
Autor:
Schmidt, T. O. B., Neuhäuser, R., Briceño, C., Vogt, N., Raetz, St., Seifahrt, A., Ginski, C., Mugrauer, M., Buder, S., Adam, C., Hauschildt, P. H., Witte, S., Helling, Ch., Schmitt, J. H. M. M.
Publikováno v:
A&A 593, A75 (2016)
We surveyed the 25 Ori association for direct-imaging companions. This association has an age of only few million years. Among other targets, we observed CVSO 30, which has recently been identified as the first T Tauri star found to host a transiting
Externí odkaz:
http://arxiv.org/abs/1605.05315
Publikováno v:
Phys. Rev. C 94, 025802 (2016)
Pairing gaps in neutron matter need to be computed in a wide range of densities to address open questions in neutron star phenomenology. Traditionally, the Bardeen-Cooper-Schrieffer approach has been used to compute gaps from bare nucleon-nucleon int
Externí odkaz:
http://arxiv.org/abs/1601.01600
Publikováno v:
Phys. Rev. C 94, 025802 (2016)
The influence of short-range correlations (SRC) on the spectral distribution of neutrons is incorporated in the solution of the gap equation for the ${}^3P_2-{}^3F_2$ coupled channel in pure neutron matter at high density. This effect is studied for
Externí odkaz:
http://arxiv.org/abs/1502.05673
Publikováno v:
AIP, Conf. Proc. 1619, 73 (2014)
The influence of short-range correlations on the spectral distribution of neutrons is incorporated in the solution of the gap equation for the ${}^3P_2-{}^3F_2$ coupled channel in pure neutron matter. This effect is studied for different realistic in
Externí odkaz:
http://arxiv.org/abs/1406.7789