Prospects for the William Herschel Telescope
نویسندگان
چکیده
منابع مشابه
Detection of Cosmic Shear with the William Herschel Telescope
Gravitational lensing by large-scale structure induces weak coherent alignments in the shapes of background galaxies. Here we present evidence for the detection of this ‘cosmic shear’ at the 3.4σ significance level with the William Herschel Telescope. Analysis and removal of notable systematic effects, such as shear induced by telescope optics and smearing by tracking and seeing, are conducted ...
متن کاملAn Enlarged Cosmic Shear Survey with the William Herschel Telescope
We report the results of a cosmic shear survey using the 4.2m William Herschel Telescope on La Palma, to a depth of R = 25.8 (zs ≈ 0.8), over 4 square degrees. The shear correlation functions are measured on scales from 1 to 15, and are used to constrain cosmological parameters. We ensure that our measurements are free from instrumental systematics, by performing a series of tests including an ...
متن کاملMeasuring stellar magnetic fields with the low resolution spectropolarimeter of the William Herschel Telescope
Despite the influence of magnetic fields on the structure and evolution of stars is largely demonstrated from the theoretical point of view, their observational evidence in nondegenerated stars is still rather scanty and mainly circumscribed to bright objects (V<10). Stellar magnetic fields are commonly measured on the basis of circular spectropolarimetry at high/middle resolution across the pr...
متن کاملSubmillimetre surveys: the prospects for Herschel
Using the observed submillimetre source counts, from 250 to 1200μm [including the most recent 250, 350 and 500μm counts from Balloon-borne Large-Aperture Submillimetre Telescope (BLAST)], we present a model capable of reproducing these results, which is used as a basis to make predictions for upcoming surveys with the Spectral and Photometric Imaging Receive (SPIRE) instrument aboard the Hersch...
متن کاملThe MAGIC Telescope - Prospects for GRB research
The Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) Telescope collaboration is constructing a large Cherenkov telescope (17 m diameter) for the exploration of the gamma-ray energy regime above 10 GeV with high sensitivity. One of the highlights in the science program of this future observatory are the plans for fast follow-up observations of of GRBs. By “fast” we mean delays of less than ...
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ژورنال
عنوان ژورنال: Astronomy and Geophysics
سال: 2005
ISSN: 1366-8781,1468-4004
DOI: 10.1111/j.1468-4004.2005.46609.x