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Intensity mapping (IM) with neutral hydrogen is a promising avenue to probe the large scale structure of the Universe. In this paper, we demonstrate that using the 64-dish MeerKAT radio telescope as a connected interferometer, it is…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-28 Sourabh Paul , Mario G. Santos , Junaid Townsend , Matt J. Jarvis , Natasha Maddox , Jordan D. Collier , Bradley S. Frank , Russ Taylor

Hydrogen 21-cm Line Intensity Mapping offers the unique opportunity to access the Dark Ages and trace the formation and evolution of the large scale structure of the Universe prior to star and galaxy formation. In this work we investigate…

Cosmology and Nongalactic Astrophysics · Physics 2025-09-22 Elena Vanetti , Eleonora Vanzan , Nicola Bellomo , Alvise Raccanelli

We introduce the DM Radio, a dual search for axion and hidden photon dark matter using a tunable superconducting lumped-element resonator. We discuss the prototype DM Radio Pathfinder experiment, which will probe hidden photons in the 500…

We investigate the prospect of constraining scalar field dark energy models using HI 21-cm intensity mapping surveys. We consider a wide class of coupled scalar field dark energy models whose predictions about the background cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2016-09-21 Azam Hussain , Shruti Thakur , Tapomoy Guha Sarkar , Anjan A Sen

Radio spectroscopy at 323 MHz using the Arecibo Telescope and the VLA has produced a tentative detection of the 21cm line of neutral hydrogen at Z_abs=3.38716+-0.00007 in absorption against the radio continuum of the QSO MG0201+113 (Z_em =…

Astrophysics · Physics 2009-10-30 F. H. Briggs , E. Brinks , A. M. Wolfe

Next generation neutrino telescopes are highly anticipated to boost the development of neutrino astronomy. A multi-cubic-kilometer neutrino telescope, TRopIcal DEep-sea Neutrino Telescope (TRIDENT), was proposed to be built in the South…

Neutral hydrogen (HI) intensity mapping (IM) presents great promise for future cosmological large-scale structure surveys. However, a major challenge for HIIM cosmological studies is to accurately subtract the foreground contamination. An…

Instrumentation and Methods for Astrophysics · Physics 2025-04-10 Xinyang Zhao , Yichao Li , Wenxiu Yang , Furen Deng , Yougang Wang , Fengquan Wu , Xin Wang , Xiaohui Sun , Xin Zhang , Xuelei Chen

The Canadian Large Adaptive Reflector (CLAR) is a proposed prototype of a new concept for large, filled-aperture radio telescopes. The prototype would have a 300-metre aperture, working up to frequencies of at least 1.4 GHz, and would be…

Astrophysics · Physics 2007-05-23 S. Cote , A. R. Taylor , P. E. Dewdney

Holographic multiple-input multiple-output (MIMO) systems constitute a promising technology in support of next-generation wireless communications, thus paving the way for a smart programmable radio environment. However, despite its…

Information Theory · Computer Science 2024-05-28 Yuanbin Chen , Ying Wang , Zhaocheng Wang , Ping Zhang

The GEM (Galactic Emission Mapping) project is an international collaboration established with the aim of surveying the full sky at long wavelengths with a multi-frequency radio telescope. A total of 745 hours of observation at 408 MHz were…

Polarized synchrotron emission at meter to centimeter wavelengths provides an effective tracer of the Galactic magnetic field. Calculating Faraday depth, the most useful parameter for mapping the line-of-sight magnetic field, requires…

Observations of the 21-cm line from primordial hydrogen promise to be one of the best tools to study the early epochs of the Universe: the Dark Ages, the Cosmic Dawn, and the subsequent Epoch of Reionization. In 2018, the EDGES experiment…

A new generation detector for the high energy cosmic ray - the DAMPE(DArk Matter Particle Explorer) is a satellite based project. Its main object is the measurement of energy spectrum of cosmic ray nuclei from 100GeV to 100TeV, the high…

Instrumentation and Detectors · Physics 2014-05-20 R. R. Fan , F. Zhang , W. X. Peng , Y. F. Dong , K. Gong , S. Yang , D. Y. Guo , J. Z. Wang , M. Gao , X. H. Liang , J. Y. Zhang , X. Z. Cui , Y. Q. Liu , H. Y. Wang

21cm intensity mapping experiments aim to observe the diffuse neutral hydrogen (HI) distribution on large scales which traces the Cosmic structure. The Square Kilometre Array (SKA) will have the capacity to measure the 21cm signal over a…

Cosmology and Nongalactic Astrophysics · Physics 2015-01-19 Laura Wolz , Filipe B. Abdalla , David Alonso , Chris Blake , Philip Bull , Tzu-Ching Chang , Pedro G. Ferreira , Cheng-Yu Kuo , Marios G. Santos , Richard Shaw

We discuss the prospects for ``tomography'' of the intergalactic medium (IGM) at high redshifts using the 21 cm transition of neutral hydrogen. Existing observational constraints on the epoch of reionization imply a complex ionization…

Astrophysics · Physics 2009-11-10 Steven Furlanetto , Frank Briggs

The Canadian Automated Meteor Observatory (CAMO) mirror tracking system has been in operation since 2009 and has, to date, produced more than 20,000 two-station meteor observations at meter-level spatial and 10 ms temporal resolution. In…

Earth and Planetary Astrophysics · Physics 2024-10-24 Michael Mazur , Margaret Campbell-Brown , Peter Brown , Denis Vida , Pete Gural , Zhangqing Yang

This is a design study into the capabilities of the Australian Square Kilometre Array Pathfinder in performing a full-sky low redshift neutral hydrogen survey, termed WALLABY, and the potential cosmological constraints one can attain from…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Alan R. Duffy , Adam Moss , Lister Staveley-Smith

Building on the successful development of the 10 $\mu m$ HgCdTe detector arrays for the proposed NEOCam mission, the University of Rochester Infrared Detector team and Teledyne Imaging Systems are working together to extend the cutoff…

Instrumentation and Methods for Astrophysics · Physics 2019-09-19 Mario S. Cabrera , Craig W. McMurtry , Meghan L. Dorn , William J. Forrest , Judith L. Pipher , Donald Lee