Results 41 to 50 of about 1,087,488 (286)

Radio telescope search for the resonant conversion of cold dark matter axions from the magnetized astrophysical sources [PDF]

Physical Review D, 2018
We study the conditions for the adiabatic resonant conversion of the cold dark matter (CDM) axions into photons in the astrophysically sourced strong magnetic fields such as those in the neutron star magnetosphere. We demonstrate the possibility that the
F. Huang, K. Kadota, Toyokazu Sekiguchi, H. Tashiro   +3 more
semanticscholar   +1 more source

New Radio Telescopes [PDF]

Highlights of Astronomy, 1986
AbstractNearly all of the exciting discoveries in radio astronomy have come from new instruments or techniques which have provided new frequencies, high sensitivity, higher spatial or time resolution, or improved image quality. Since the last General Assembly a number of major new radio telescopes have been completed while construction of others have ...
openaire   +2 more sources

Observations of a nearby filament of galaxy clusters with the Sardinia Radio Telescope [PDF]

Monthly notices of the Royal Astronomical Society, 2018
We report the detection of diffuse radio emission which might be connected to a large-scale filament of the cosmic web covering a 8deg x 8deg area in the sky, likely associated with a z~0.1 over-density traced by nine massive galaxy clusters.
V. Vacca, M. Murgia, F. Govoni, F. Loi, F. Vazza, A. Finoguenov, E. Carretti, L. Feretti, G. Giovannini, R. Concu, A. Melis, C. Gheller, R. Paladino, S. Poppi, G. Valente, G. Bernardi, W. Boschin, M. Brienza, T. Clarke, S. Colafrancesco, T. Enßlin, C. Ferrari, F. Gasperin, F. Gastaldello, M. Girardi, L. Gregorini, M. Johnston-Hollitt, H. Junklewitz, E. Orrú, P. Parma, R. Perley, G. Taylor   +31 more
semanticscholar   +1 more source

STUDIES OF PULSAR RADIO EMISSION WITH THE GURT RADIO TELESCOPE SUBARRAY [PDF]

Radio Physics and Radio Astronomy, 2018
Purpose: Finding the possibility of pulsar radio emission studies in the meter wavelength range with a small-sized subarray of the low-frequency GURT radio telescope of new generation. Development of the joint pulsar radio emission observations technique
V. V. Zakharenko, O. O. Konovalenko, S. M. Yerin, I. M. Bubnov, I. Y. Vasylieva, O. M. Ulyanov, V. Y. Yatsyna   +6 more
doaj   +1 more source

Optimized Trigger for Ultra-High-Energy Cosmic-Ray and Neutrino Observations with the Low Frequency Radio Array [PDF]

, 2011
When an ultra-high energy neutrino or cosmic ray strikes the Lunar surface a radio-frequency pulse is emitted. We plan to use the LOFAR radio telescope to detect these pulses.
Anderson, J. M., Arts, M., Asgekar, A., Avruch, M., Bell, M., Bennema, P., Bentum, M., Bernadi, G., Best, P., Boonstra, A. -J., Bregman, J., Broekema, C., Brouw, W., Brueggen, M., Buitink, S., Butcher, H., Ciardi, B., Coolen, A., Damstra, S., de Jong, A., de Reijer, J., de Vos, M., Dettmar, R., Dijkstra, K., Donker, P., Doorduin, A., Drost, M., Eisloeffel, J., Falcke, H., Garrett, M., Gerbers, M., Griessmeier, J., Grit, T., Gruppen, P., Gunst, A., Hoeft, M., Holties, H., Horandel, J., Horneffer, L. A., Huijgen, A., James, C., Kant, D., Kooistra, E., Koopman, Y., Koopmans, L., Kuper, G., Lambropoulos, P., Loose, M., Maat, P., Mallary, C., McFadden, R., Meulman, H., Mevius, M., Mol, J. -D., Morawietz, J., Mulder, E., Munk, H., Nieuwenhuis, L., Nijboer, R., Noordam, J., Norden, M., Overeem, R., Paas, H., Pandey, V. N., Pandey-Pommier, M., Pizzo, R., Polatidis, A., Reich, W., Renting, A., Riemers, P., Roettgering, H., Romein, J., Roosjen, J., Ruiter, M., Schoenmakers, A., Scholten, O., Schoonderbeek, G., Singh, K., Sluman, J., Smirnov, O., Stappers, B., Steinmetz, M., Stiepel, H., Stuurwold, K., Tagger, M., Tang, Y., ter Veen, S., van Ardenne, A., van Cappellen, W., van de Brink, R., van der Wal, E., van Diepen, G., van Duin, A., van Haarlem, M., van Leeuwen, J., van Zwieten, J., Vermeulen, R., Vogt, C., Weggemans, H., Wijnholds, S., Wise, M., Wucknitz, O., Yattawatta, S.   +102 more
core   +6 more sources

Sparse Image Reconstruction for the SPIDER Optical Interferometric Telescope

, 2021
The concept of a recently proposed small-scale interferometric optical imaging device, an instrument known as the Segmented Planar Imaging Detector for Electro-optical Reconnaissance (SPIDER), is of great interest for its possible applications in ...
McEwen, Jason D., Pratley, Luke
core   +1 more source

The Sardinia Radio Telescope [PDF]

AIP Conference Proceedings, 2011
We present the status of the Sardinia Radio Telescope (SRT) project, a new general purpose, fully steerable 64 m diameter parabolic radio telescope under construction in Sardinia. The instrument is funded by Italian Ministry of University and Research (MIUR), by the Sardinia Regional Government (RAS), and by the Italian Space Agency (ASI), and it is ...
Nichi D’Amico, Marta Burgay, Nicolò D’Amico, Paolo Esposito, Alberto Pellizzoni, Andrea Possenti   +5 more
openaire   +2 more sources

MULTIPLE CORRELATION MODELS OF DEPENDENCE OF RADIANT FLUXES OF COSMIC RADIO SOURCES ON EXTREME CONDITIONS OF SPACE WEATHER AT DECAMETER WAVES [PDF]

Radio Physics and Radio Astronomy, 2018
Purpose: Investigation of the effects of the influence of solar and geomagnetic activity on the condition of the Earth’s upper atmosphere by the method of “transmission through” it with the radiation of cosmic radio sources.
L. I. Sobitniak
doaj   +1 more source

Effect of Parasitic Element on 408 MHz Antenna for Radio Astronomy Application

International Journal of Antennas and Propagation, 2014
Antenna is one of the important subsystem components in a radio telescope system. In this paper, analysis on the effect of parasitic element on 408 MHz antenna in a radio telescope system is presented.
Radial Anwar, Mohammad Tariqul Islam, Norbahiah Misran, Geri Gopir, Baharudin Yatim, Mhd Fairos Asillam   +5 more
doaj   +1 more source

The Allen Telescope Array: The First Widefield, Panchromatic, Snapshot Radio Camera for Radio Astronomy and SETI [PDF]

, 2009
The first 42 elements of the Allen Telescope Array (ATA-42) are beginning to deliver data at the Hat Creek Radio Observatory in Northern California. Scientists and engineers are actively exploiting all of the flexibility designed into this innovative ...
Ackermann, Robert, Atkinson, Shannon, Backer, Don, Backus, Peter, Barott, William, Blitz, Leo, Bock, Douglas C.-J., Bower, Geoffrey C., Bradford, Tucker, Cheng, Calvin, Cork, Chris, Croft, Steve, Davis, Michael, DeBoer, Dave, Dexter, Matt, Dreher, John, Engargiola, Greg, Fields, Ed, Fleming, Matt, Forster, James, Gutierrez-Kraybill, Colby, Harp, Gerry, Heiles, Carl, Helfer, Tamara, Jordan, Jane, Jorgensen, Susanne, Keating, Garrett, Kilsdonk, Tom, Lugten, John, MacMahon, Dave, Milgrome, Oren, Pierson, Tom, Randall, Karen, Ross, John, Shostak, Seth, Tarter, Jill, Thornton, Douglas, Urry, Lynn, van Leeuwen, Joeri, Vitouchkine, Artyom, Wadefalk, Niklas, Weinreb, Sander, Welch, Jack, Wertheimer, Dan, Williams, Peter H., Wright, Melvin   +45 more
core   +2 more sources