Results 91 to 100 of about 33,635 (203)

Simultaneous measurement of cosmology and intrinsic alignments using joint cosmic shear and galaxy number density correlations

, 2010
Cosmic shear is a powerful method to constrain cosmology, provided that any systematic effects are under control. The intrinsic alignment of galaxies is expected to severely bias parameter estimates if not taken into account.
Abdalla, B. Joachimi, Bacon, Bartelmann, Benjamin, Bernstein, Bernstein, Blake, Blake, Bridle, Bridle, Broadhurst, Brown, Cacciato, Catelan, Cresswell, Crittenden, Croft, Das, Dolney, Eisenstein, Fu, Guzik, Guzik, Guzik, Hetterscheidt, Heymans, Heymans, Hirata, Hirata, Hoekstra, Hu, Hu, Hu, Huterer, Jarvis, Jing, Joachimi, Joachimi, Joachimi, Johnston, Kaiser, King, King, King, Kitching, Kitching, Kitching, Lahav, Lee, Linder, Liu, Ma, Mackey, Mandelbaum, Massey, McCracken, McDonald, Newman, Okumura, Okumura, Padmanabhan, Pen, Réfrégier, Réfrégier, S. L. Bridle, Schmidt, Schneider, Schneider, Schneider, Schrabback, Schrabback, Schäfer, Seitz, Seljak, Seljak, Semboloni, Semboloni, Simon, Simon, Smail, Smith, Swanson, Takada, Takada, Tegmark, Tereno, Thomas, van den Bosch, van Waerbeke, van Waerbeke, Wang, Wittman, Wolf, Yoo, Zhan, Zhang, Zhang, Zhang, Zhang   +99 more
core   +2 more sources

Late‐Holocene evolution of a small Sub‐Arctic glacier, Gljúfurárjökull (Tröllaskagi, northern Iceland)

Boreas, Volume 55, Issue 2, Page 356-383, April 2026.
Gljúfurárjökull, located on the Tröllaskagi Peninsula in northern Iceland, is a small glacier approximately 3.8 km in length. This study analyses the glacier's evolution through a combination of methods including: (i) geomorphological mapping, (ii) Cosmic‐Ray Exposure (CRE) dating, (iii) lichenometry and (iv) palaeoglacier reconstruction (volume ...
Nuria Andrés, José M. Fernández‐Fernández, David Palacios, Irene Schimmelpfennig, Leopoldo G. Sancho, Skafti Brynjólfsson, Þorsteinn Sæmundsson, Wesley R. Farnsworth, Luis M. Tanarro, Mariano Brito, Javier Santos‐González, Rosa B. González‐Gutiérrez, ASTER Team (Georges Aumaître, Karim Keddadouche)   +13 more
wiley   +1 more source

Terapixel Surveys for Cosmic Shear [PDF]

, 2006
Latex, 11 pages. To appear in the ESO Proceedings ``Mining the Sky'', Garching July 31th-Aug. 4th, 2000. A.J.
Mellier, Y., van Waerbeke, L., Radovich, M., Bertin, E., Dantel-Fort, M., Cuillandre, J. -C., Cracken, H. Mc, Fevre, O. Le, Didelon, P., Morin, B., Maoli, R., Erben, T., Bernardeau, F., Schneider, P., Fort, B., Jain, B.   +15 more
openaire   +2 more sources

Jacobi Mapping Approach for a Precise Cosmological Weak Lensing Formalism

, 2018
Cosmological weak lensing has been a highly successful and rapidly developing research field since the first detection of cosmic shear in 2000. However, it has recently been pointed out in Yoo et al.
Grimm, Nastassia, Yoo, Jaiyul
core   +1 more source

Rapid Evolution of Super Equatorial Plasma Bubbles and X‐Pattern EIA Formation During Extreme Storm Conditions on 12 November 2025

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Extreme conditions during storms profoundly alter the evolution of equatorial plasma bubbles (EPBs), yet the key dynamics remains poorly understood. We document the rapid expansion, contraction, and decay of super EPBs in South America during the 12 November 2025 storm with Interplanetary Magnetic Field (IMF) Bz/By magnitude exceeding ∼50 nT ...
Shasha Zou, Lei Liu, Hang Liu, Anthea Coster, Robert Kerr, Jonas Souza, Angela Santos   +6 more
wiley   +1 more source

A Scalable Gaussian Process Approach to Shear Mapping with MuyGPs

The Astrophysical Journal
Analysis of cosmic shear is an integral part of understanding structure growth across cosmic time, which in turn provides us with information about the nature of dark energy.
Gregory Sallaberry, Benjamin W. Priest, Robert Armstrong, Michael Schneider, Amanda Muyskens, Trevor Steil, Keita Iwabuchi   +6 more
doaj   +1 more source

Quantifying the impact of detection bias from blended galaxies on cosmic shear surveys

Astronomy & Astrophysics
Increasingly large areas in cosmic shear surveys lead to a reduction in statistical errors, necessitating increasingly accurate control of systematic errors.
Genc Eray, Schneider Peter, Unruh Sandra, Schrabback Tim   +3 more
doaj   +1 more source

First LiDAR Observation of Quasi‐Periodic Structures in Mid‐Latitude E‐Region Meteoric Ca+ Layers

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract We report the first LiDAR observations of continuous quasi‐periodic (QP) metal density structures in mid‐latitude E‐region meteoric Ca+ layers using an all‐solid‐state LiDAR system in Beijing (40.4°N, 116.0°E). These QP Ca+ structures, with periods of 2–30 min and vertical wavelengths of ∼2–15 km, were primarily observed above 100 km.
Jixin Guo, Tao Yu, Lifang Du, Jin Wang, Xiangxiang Yan, Yan Yu, Wenyu Hao, Yifan Qi, Haoran Zheng, Guotao Yang   +9 more
wiley   +1 more source

Wide-field cosmic shear surveys

SPIE Proceedings, 2002
To appear in SPIE Conference 4847 Astronomical Telescopes and Instrumentation.
Mellier, Y., van Waerbeke, L., Bertin, E., Tereno, I., Bernardeau, F.   +4 more
openaire   +2 more sources

On Mitigation of the Uncertainty in Nonlinear Matter Clustering for Cosmic Shear Tomography

, 2010
We present a new method that deals with the uncertainty in matter-clustering in cosmic shear power spectrum analysis that arises mainly due to poorly understood nonlinear baryonic processes on small-scales.
Kitching, T. D., Taylor, A. N.
core   +1 more source