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相关论文: A Full-Sky H-alpha Template for Microwave Foregrou…

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We present a new study of the high latitude galactic contributions to the millimeter sky, based on an analysis of the WMAP data combined with several templates of dust emission (DIRBE/COBE and FIRAS/COBE) and gas tracers (HI and Halpha). To…

天体物理学 · 物理学 2009-11-07 G. Lagache

We perform a definitive analysis of Bianchi VII_h cosmologies with WMAP observations of the cosmic microwave background (CMB) temperature anisotropies. Bayesian analysis techniques are developed to study anisotropic cosmologies using…

宇宙学与河外天体物理 · 物理学 2013-12-04 J. D. McEwen , T. Josset , S. M. Feeney , H. V. Peiris , A. N. Lasenby

This paper presents a prescription for distilling the information contained in the cosmic microwave background radiation from multiple sky maps that also contain both instrument noise and foreground contaminants. The prescription is…

天体物理学 · 物理学 2008-05-02 Steven Gratton

Detection of magnetic-type ($B$-type) polarization in the Cosmic Microwave Background (CMB) radiation plays a crucial role in probing the relic gravitational wave (RGW) background. In this paper, we propose a new method to deconstruct a…

宇宙学与河外天体物理 · 物理学 2015-03-17 Wen Zhao , Deepak Baskaran

According to the second Fermi LAT Catalog (2FGL), about one third of the gamma-ray sources listed have no assigned counterparts at lower energies. Many statistical methods have been developed to find proper counterparts for these sources.…

高能天体物理现象 · 物理学 2015-03-12 M. Nori , M. Giroletti , F. Massaro , R. D'Abrusco , A. Paggi , G. Tosti , S. Funk

We study systematic effects from half-wave plates (HWPs) for cosmic microwave background (CMB) experiments using full-sky time-domain beam convolution simulations. Using an optical model for a fiducial spaceborne two-lens refractor…

宇宙学与河外天体物理 · 物理学 2021-02-17 Adriaan J. Duivenvoorden , Alexandre E. Adler , Matteo Billi , Nadia Dachlythra , Jon E. Gudmundsson

We present a novel estimate of the cosmological microwave background (CMB) map by combining the two latest full-sky microwave surveys: WMAP nine-year and Planck PR1. The joint processing benefits from a recently introduced component…

宇宙学与河外天体物理 · 物理学 2015-06-18 J. Bobin , F. Sureau , J. -L. Starck , A. Rassat , P. Paykari

H-wave is an open-source software package for performing the Hartree--Fock approximation (HFA) and random phase approximation (RPA) for a wide range of Hamiltonians of interacting fermionic systems. In HFA calculations, H-wave examines the…

We have used the Very Large Array(VLA) in C configuration to carry out a sensitive 20cm radio survey of regions of sky that have been surveyed in the Far Infra-Red over the wavelength range 5-200 microns with ISO as part of the European…

SARAS is a correlation spectrometer connected to a frequency independent antenna that is purpose-designed for precision measurements of the radio background at long wavelengths. The design, calibration and observing strategies admit…

宇宙学与河外天体物理 · 物理学 2015-06-23 Nipanjana Patra , Ravi Subrahmanyan , Shiv Sethi , N. Udaya Shankar , A. Raghunathan

In experimental microwave maps, point-sources can strongly affect the estimation of the power-spectrum and/or the test of Gaussianity of the Cosmic Microwave Background (CMB) component. As a consequence, their removal from the sky maps…

宇宙学与河外天体物理 · 物理学 2015-05-19 Elsa Patricia R. G. Ramos , Roberto Vio , Paola Andreani

Estimation of the sky signal from sequences of time ordered data is one of the key steps in Cosmic Microwave Background (CMB) data analysis, commonly referred to as the map-making problem. Some of the most popular and general methods…

宇宙学与河外天体物理 · 物理学 2014-12-16 Mikolaj Szydlarski , Laura Grigori , Radek Stompor

The Wavelength-Oriented Microwave Background Analysis Team (WOMBAT) is constructing microwave skymaps which will be more realistic than previous simulations. Our foreground models represent a considerable improvement: where spatial…

We measured the cross-correlation of the Wilkinson Microwave Anisotropy Probe (WMAP) 7 year temperature map and the full sky data release of the Wide-field Infrared Survey Explorer (WISE) galaxy map. Using careful mapmaking and masking…

宇宙学与河外天体物理 · 物理学 2015-06-12 András Kovács , István Szapudi , Benjamin R. Granett , Zsolt Frei

A search for matched circle pairs of similar temperature fluctuations in the final WMAP 9yr data is carried out. Such a signature is expected if the space of the Universe is multiply connected. We investigate the relation between the pixel…

宇宙学与河外天体物理 · 物理学 2013-10-22 Ralf Aurich , Sven Lustig

This article describes the assembly of an optical (RGB) all-sky mosaic image with an image scale of 36 arcsec/pixel, a limiting magnitude of approx. 14 mag and an 18 bit dynamic range. Using a portable low-cost system, 70 fields (each…

星系天体物理 · 物理学 2014-11-20 Axel Mellinger

We present the first full release of a survey of the 150 MHz radio sky, observed with the Giant Metrewave Radio Telescope between April 2010 and March 2012 as part of the TGSS project. Aimed at producing a reliable compact source survey,…

宇宙学与河外天体物理 · 物理学 2017-02-08 H. T. Intema , P. Jagannathan , K. P. Mooley , D. A. Frail

Direct-imaging searches for planets reveal wide orbit planets amenable to spectroscopy, and their atmospheres represent an important comparison to the irradiated atmospheres of Hot Jupiters. Using AO integral field spectroscopy of 2M1207 b,…

地球与行星天体物理 · 物理学 2010-03-25 Jenny Patience , Robert R. King , Robert J. De Rosa , Christian Marois

We review the available near- and mid- infrared photometry data sets for white dwarfs from the Two Micron All-Sky Survey (2MASS) Point Source Catalog and the Spitzer Space Telescope. These data sets have been widely used to search for white…

天体物理学 · 物理学 2007-05-23 P. -E. Tremblay , P. Bergeron
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