Search Results - "Pen, U. L"
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Erasing the Milky Way: new cleaning technique applied to GBT intensity mapping data
Published in Monthly notices of the Royal Astronomical Society (01-02-2017)“…We present the first application of a new foreground removal pipeline to the current leading H i intensity mapping data set, obtained by the Green Bank…”
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Determination of z ∼ 0.8 neutral hydrogen fluctuations using the 21 cm intensity mapping autocorrelation
Published in Monthly notices of the Royal Astronomical Society. Letters (01-09-2013)“…The large-scale distribution of neutral hydrogen in the Universe will be luminous through its 21 cm emission. Here, for the first time, we use the auto-power…”
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INTERPRETING THE UNRESOLVED INTENSITY OF COSMOLOGICALLY REDSHIFTED LINE RADIATION
Published in The Astrophysical journal (10-12-2015)“…ABSTRACT Intensity mapping experiments survey the spectrum of diffuse line radiation rather than detect individual objects at high signal-to-noise ratio…”
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Low-amplitude clustering in low-redshift 21-cm intensity maps cross-correlated with 2dF galaxy densities
Published in Monthly notices of the Royal Astronomical Society (21-05-2018)“…Abstract We report results from 21-cm intensity maps acquired from the Parkes radio telescope and cross-correlated with galaxy maps from the 2dF galaxy survey…”
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Simulating cosmic reionization at large scales - I. The geometry of reionization
Published in Monthly notices of the Royal Astronomical Society (11-07-2006)“…We present the first large-scale radiative transfer simulations of cosmic reionization, in a simulation volume of (100 h −1 Mpc)3. This is more than a two…”
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Non-Gaussian errors of baryonic acoustic oscillations
Published in Monthly notices of the Royal Astronomical Society (01-02-2012)“…We revisit the uncertainty in baryon acoustic oscillation (BAO) forecasts and data analyses. In particular, we study how much the uncertainties on both the…”
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REIONIZATION ON LARGE SCALES. II. DETECTING PATCHY REIONIZATION THROUGH CROSS-CORRELATION OF THE COSMIC MICROWAVE BACKGROUND
Published in The Astrophysical journal (20-10-2013)“…We investigate the effect of patchy reionization on the cosmic microwave background (CMB) temperature. An anisotropic optical depth [tau](n) alters the TT…”
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Extended Mosaic Observations with the Cosmic Background Imager
Published in The Astrophysical journal (10-07-2004)“…Two years of microwave background observations with the Cosmic Background Imager (CBI) have been combined to give a sensitive, high-resolution angular power…”
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Halo stochasticity in global clustering analysis
Published in Monthly notices of the Royal Astronomical Society (01-07-2009)“…Galaxy clustering and cosmic magnification can be used to estimate the dark matter power spectrum if the theoretical relation between the distribution of…”
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Cosmological Parameters from Cosmic Background Imager Observations and Comparisons with BOOMERANG, DASI, and MAXIMA
Published in The Astrophysical journal (10-07-2003)“…We report on the cosmological parameters derived from observations with the Cosmic Background Imager (CBI), covering 40 deg2 and the multipole range…”
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The Anisotropy of the Microwave Background to l = 3500: Mosaic Observations with the Cosmic Background Imager
Published in The Astrophysical journal (10-07-2003)Get full text
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The Santa Barbara Cluster Comparison Project: A Comparison of Cosmological Hydrodynamics Solutions
Published in The Astrophysical journal (10-11-1999)“…We have simulated the formation of an X-ray cluster in a cold dark matter universe using 12 different codes. The codes span the range of numerical techniques…”
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The Sunyaev-Zel'dovich Effect in CMB-calibrated Theories Applied to the Cosmic Background Imager Anisotropy Power at l > 2000
Published in The Astrophysical journal (10-06-2005)“…We discuss the nature of the possible high-l excess in the cosmic microwave background (CMB) anisotropy power spectrum observed by the Cosmic Background Imager…”
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A bright millisecond-duration radio burst from a Galactic magnetar
Published in Nature (London) (05-11-2020)“…Magnetars are highly magnetized young neutron stars that occasionally produce enormous bursts and flares of X-rays and γ-rays 1 . Of the approximately thirty…”
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A repeating fast radio burst source localized to a nearby spiral galaxy
Published in Nature (London) (09-01-2020)“…Fast radio bursts (FRBs) are brief, bright, extragalactic radio flashes 1 , 2 . Their physical origin remains unknown, but dozens of possible models have been…”
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Periodic activity from a fast radio burst source
Published in Nature (London) (18-06-2020)“…Fast radio bursts (FRBs) are bright, millisecond-duration radio transients originating from sources at extragalactic distances 1 , the origin of which is…”
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Disentangling interstellar plasma screens with pulsar VLBI: combining auto- and cross-correlations
Published in Monthly notices of the Royal Astronomical Society (01-10-2019)“…Abstract Current methods of measuring distances to pulsar scattering screens rely on a single screen dominating the scintillation pattern. We present a novel…”
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The CHIME Fast Radio Burst Project: System Overview
Published in The Astrophysical journal (10-08-2018)“…The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a novel transit radio telescope operating across the 400-800 MHz band. CHIME is composed of four…”
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Burst properties of the highly active FRB20201124A using uGMRT
Published in Monthly notices of the Royal Astronomical Society (01-01-2022)“…ABSTRACT We report the observations of the highly active FRB20201124A with the upgraded Giant Metrewave Radio Telescope (uGMRT) at 550–750 MHz. These…”
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Detection of 15 bursts from the fast radio burst 180916.J0158+65 with the upgraded Giant Metrewave Radio Telescope
Published in Monthly notices of the Royal Astronomical Society. Letters (01-11-2020)“…ABSTRACT We report the findings of an upgraded Giant Metrewave Radio Telescope (uGMRT) observing campaign for FRB 180916.J0158+65, which was recently found to…”
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