Results 81 to 90 of about 6,575 (221)

The Role of Secondary Recoil Leaders in the Formation of Subsequent Return Strokes

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract Recoil leaders develop in lightning flash decayed channels. The propagation of a recoil leader depends on the charges stored at its tip and the conductivity of the decayed channel. When the recoil leader propagates over the entire channel, a subsequent return stroke happens.
Ivan T. Cruz, Marcelo M. F. Saba, José Claudio O. Silva, Carina Schumann   +3 more
wiley   +1 more source

Tomography of the Cosmic Dawn and Reionization Eras with Multiple Tracers [PDF]

, 2019
The Cosmic Dawn and Reionization epochs remain a fundamental but challenging frontier of astrophysics and cosmology. We advocate a large-scale, multi-tracer approach to develop a comprehensive understanding of the physics that led to the formation and ...
Breysse, Patrick C., Bradford, Charles M., Readhead, Anthony, Furlanetto, Steve, Charmandaris, Vassilis, Riechers, Dominik, Kovetz, Ely D., Readhead, A., Rhodes, Jason, D., Doré, Olivier, Cooray, Asantha, Hallinan, Gregg, Breysse, Patrick, Fan, Xiaohui, Parsons, Aaron, Rhodes, Jason,, Lazio, Joseph, Seiffert, Michael, Crites, Abigail, Heneka, Caroline, Beane, Angus, Cheng, Yun-Ting, Zheng, Zheng, Korngut, Phil, Berger, Philippe, Stacey, Gordon, Hewitt, Jacqueline, Finkelstein, Steve, Liu, Adrian, Sun, Guochao, Thakur, Ritoban Basu, Hunacek, J., Bock, Jamie, Hewitt, Jackie, Mas-Ribas, Lluis, Rhodes, Jason, Lawrence, Charles, Visbal, Eli, Bethermin, Matthieu, Wu, Hao-Yi, Lidz, Adam, Zemcov, Michael, Marrone, Dan, Burgarella, Denis, Marrone, Daniel, Alvarez, Marcelo, Ewall-Wice, Aaron, Lagache, Guilaine, Chang, Tzu-Ching, Cleary, Kieran, Hunacek, Jonathon, Kovetz, Ely, Basu Thakur, Ritoban   +52 more
core  

Forecasts for Helium Reionization Detection with Fast Radio Bursts in the Era of Square Kilometre Array

The Astrophysical Journal
The observed dispersion measures (DMs) of fast radio bursts (FRBs) are a good indicator of the amount of ionized material along the propagation paths.
Jun-Jie Wei, Chong-Yu Gao
doaj   +1 more source

The 21cm–galaxy cross-correlation: Realistic forecast for 21cm signal detection and reionisation constraints

Astronomy & Astrophysics
Context. The 21cm–galaxy cross-correlations are expected to play a key role in the confirmation of the cosmological 21cm signal. Aims. We investigate which survey configurations detect the 21cm–Lyman-α emitter (LAE) cross-correlation signal and assess ...
Hutter Anne, Heneka Caroline
doaj   +1 more source

Constraints on the Observability of Energetic Neutral Atoms From the Magnetosphere‐Atmosphere Interactions at Callisto and Europa

Journal of Geophysical Research: Space Physics, Volume 130, Issue 1, January 2025.
Abstract We investigate the emission of energetic neutral atoms (ENAs) from the magnetosphere‐atmosphere interactions at Europa and Callisto that may be observed by an ENA imaging instrument. To do so, we combine the draped electromagnetic fields from the AIKEF hybrid model with a tracing tool for the energetic magnetospheric parent ions.
C. Michael Haynes, Tyler Tippens, Sven Simon, Lucas Liuzzo   +3 more
wiley   +1 more source

Probing Reionization with Currently Available Observables

, 2022
The reionization of hydrogen -- the era when the intergalactic gas turned from cold and neutral to hot and highly ionized when the universe was hundreds of millions of years old -- remains one of the biggest mysteries in astronomy research.
Wu, Xiaohan
core  

Toward Reconciling Reionization with JWST: The Role of Bright Galaxies and Strong Feedback

The Astrophysical Journal
The elevated UV luminosity functions (UVLFs) from recent James Webb Space Telescope (JWST) observations have challenged the viability of existing theoretical models.
Ankita Bera, Sultan Hassan, Robert Feldmann, Romeel Davé, Kristian Finlator   +4 more
doaj   +1 more source

Measuring the intergalactic medium correlation length at 5 < z < 6.1: A fast change at the end of reionization

Astronomy & Astrophysics
Context. The Lyman-α forest of high-redshift quasars is a powerful probe of the late stages of the epoch of reionization (EoR), in particular thanks to the presence of Gunn-Peterson troughs.
Spina Benedetta, Bosman Sarah E. I., Maity Barun, Davies Frederick B.   +3 more
doaj   +1 more source

THE REIONIZATION OF GALACTIC SATELLITE POPULATIONS [PDF]

The Astrophysical Journal, 2014
We use high resolution simulations of the formation of the local group post-processed by a radiative transfer code for UV photons, to investigate the reionization of the satellite populations of an isolated Milky Way-M31 galaxy pair in a variety of scenarios. We use an improved version of ATON which includes a simple recipe for radiative feedback.
P. Ocvirk, N. Gillet, D. Aubert, A. Knebe, N. Libeskind, J. Chardin, S. Gottlýber, G. Yepes, Y. Hoffman   +8 more
openaire   +3 more sources

The kinetic Sunyaev–Zel'dovich effect from reionization

, 2005
During the epoch of reionization, local variations in the ionized fraction (patchiness) imprint arcminute-scale temperature anisotropies in the cosmic microwave background through the kinetic Sunyaev–Zel’dovich (kSZ) effect.
Furlanetto, Steven R., Lars Hernquist, Oliver Zahn, McQuinn, Matthew, Matias Zaldarriaga, Hernquist, Lars, Steven R. Furlanetto, Matthew McQuinn, Zahn, Oliver, Zaldarriaga, Matias   +9 more
core   +1 more source