An absorption profile centred at 78 megahertz in the sky-averaged spectrum

JD Bowman, AEE Rogers, RA Monsalve, TJ Mozdzen… - Nature, 2018 - nature.com
After stars formed in the early Universe, their ultraviolet light is expected, eventually, to have
penetrated the primordial hydrogen gas and altered the excitation state of its 21-centimetre …

[PDF][PDF] Development trends in conductive nano-composites for radiation shielding

V Udmale, D Mishra, R Gadhave, D Pinjare… - Oriental Journal of …, 2013 - academia.edu
Our paper reviews the use of conductive polymer composite materials in various
applications for semi conductive, static-dissipative, anti-corrosive, electromagnetic …

FlexKnot and Gaussian Process for 21 cm global signal analysis and foreground separation

S Heimersheim, L Rønneberg, H Linton… - Monthly Notices of …, 2024 - academic.oup.com
The cosmological 21 cm signal is one of the most promising avenues to study the Epoch of
Reionization. One class of experiments aiming to detect this signal is global signal …

RFI mitigation in radio astronomy

WA Baan - 2011 XXXth URSI General Assembly and Scientific …, 2011 - ieeexplore.ieee.org
Changing observing strategies and the increased sensitivity of radio astronomy
observatories have made radio frequency interference an important operational factor. All …

Deuterium abundance in the interstellar gas of the galactic anticenter from the 327 MHz line

AEE Rogers, KA Dudevoir, JC Carter… - The Astrophysical …, 2005 - iopscience.iop.org
The deuterium abundance in the primordial gas formed during the big bang is dependent on
the baryon-to-photon ratio during nucleosynthesis. We report a measurement of the …

Radio Frequency Interference spatial processing for modern radio telescopes

G Hellbourg - 2014 - theses.hal.science
Radio astronomy studies cosmic sources through their radio emissions. As passive users,
astronomers have to deal with an increasingly corrupted radio spectrum. The research …

Observations of the 327 MHz deuterium hyperfine transition

AEE Rogers, KA Dudevoir, TM Bania - The Astronomical Journal, 2007 - iopscience.iop.org
We report measurements of the 327 MHz line of deuterium for regions in the Galactic plane
at 171, 183, and 195 longitude using an array of 24 stations of fixed phased-antenna …

Interference temperature measurements from 70 to 1500 MHz in suburban and rural environments of the Northeast

AEE Rogers, JE Salah, DL Smythe… - … Symposium on New …, 2005 - ieeexplore.ieee.org
We report sensitive spectrum measurements from 70 to 1500 MHz of the radio interference
(RFI) environment at locations in Westford, Massachusetts and Hancock, New Hampshire …

Radio frequency interference in radio astronomy

JPG Porko - 2011 - aaltodoc.aalto.fi
Radio astronomy is a subfield of astronomy, which studies celestial objects with highly
sensitive radio receivers and large radio telescopes. These radio astronomical …

[PDF][PDF] Techniques for mitigation of radio frequency interference in radio astronomy

RA Series - Rep. ITU-R RA, 2013 - itu.int
Mitigation techniques fall into three general categories:– Preventing radio frequency
interference (RFI) signals from entering the astronomical data, including reduction of the …