Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Petretti, A."'
Several missions following Planck are currently under development, which will provide high-precision measurements of the Cosmic Microwave Background (CMB) anisotropies. Specifically, measurements of the E modes will become nearly limited by cosmic va
Externí odkaz:
http://arxiv.org/abs/2411.03459
We present a new mimetic finite difference method for diffusion problems that converges on grids with \textit{curved} (i.e., non-planar) faces. Crucially, it gives a symmetric discrete problem that uses only one discrete unknown per curved face. The
Externí odkaz:
http://arxiv.org/abs/2203.13105
Publikováno v:
Next Generation Very Large Array Memo Series, 2021, No. 95
A transformative science case for the proposed next-generation Very Large Array (ngVLA) is resolving the surfaces of nearby stars, both spatially and temporally, enabled by the combination of milliarcsecond-scale resolution and unprecedented sensitiv
Externí odkaz:
http://arxiv.org/abs/2110.01625
Autor:
Vasiliki Papageorgiou, Lindsay H. Dewa, Jane Bruton, Keitumetse-Kabelo Murray, Nick Hewlett, Wezi Thamm, Husseina Hamza, Pino Frumiento, Robyn Steward, Melissa Bradshaw, Ellie Brooks-Hall, Silvia Petretti, Sarah Ewans, Mark Williams, Dorota Chapko
Publikováno v:
Research Involvement and Engagement, Vol 9, Iss 1, Pp 1-7 (2023)
Abstract Background Co-produced research is when all stakeholders, including experts by experience and researchers, work together to conceptualise, design, deliver and disseminate research to enhance understanding and knowledge. This type of particip
Externí odkaz:
https://doaj.org/article/edfe89a636544af88a3317f50f23f938
Publikováno v:
In Journal of Computational Physics 1 October 2023 490
Autor:
Spector, Limor S., Miyabe, Shungo, Magana, Alvaro, Petretti, Simon, Decleva, Piero, Martinez, Todd, Saenz, Alejandro, Guehr, Markus, Bucksbaum, Philip H.
High-order harmonic generation (HHG) in aligned linear molecules can offer valuable information about strong-field interactions in lower-lying molecular orbitals, but extracting this information is difficult for three-dimensional molecular geometries
Externí odkaz:
http://arxiv.org/abs/1308.3733
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 1, p 44 (2023)
During the course of its 2005 outburst, the black hole X-ray binary GRO J1655–40 launched an accretion disk wind associated with deep X-ray absorption lines and strong Compton scattering. Little is known about this apparently super-Eddington wind,
Externí odkaz:
https://doaj.org/article/c750aae1cd594fc28f3ba9b717fa3f8f
Ionization and excitation of water molecules in intense laser pulses is studied theoretically by solving the three-dimensional time-dependent electronic Schr\"odinger equation within the single-active-electron approximation. The possibility to image
Externí odkaz:
http://arxiv.org/abs/1112.2618
Autor:
Farrell, Joe P., Petretti, Simon, Förster, Johann, McFarland, Brian K., Spector, Limor S., Vanne, Yulian V., Decleva, Piero, Bucksbaum, Philip H., Saenz, Alejandro, Gühr, Markus
High harmonic spectra show that laser-induced strong field ionization of water has a significant contribution from an inner-valence orbital. Our experiment uses the ratio of H2O and D2O high harmonic yields to isolate the characteristic nuclear motio
Externí odkaz:
http://arxiv.org/abs/1103.4423
The ionization probability of N$_2$, O$_2$, and CO$_2$ in intense laser fields is studied theoretically as a function of the alignment angle by solving the time-dependent Schr\"odinger equation numerically assuming only the single-active-electron app
Externí odkaz:
http://arxiv.org/abs/1005.1602