Results 71 to 80 of about 1,099,186 (283)

Spectral Analysis of ionospheric density variations measured with the large radio telescope in the Low-Latitude region [PDF]

, 2023
Sarvesh Mangla, Abhirup Datta
openalex   +1 more source

A Candidate Period of 4.605 Days for FRB 20121102A and One Possible Implication of Its Origin

The Astrophysical Journal
A firm establishment of the presence or the lack of periodicity in repeating fast radio bursts is crucial for determining their origins. Here, we compile 1145 radio bursts of FRB 20121102A with fluence larger than 0.15 Jy ms from observations using the ...
Jixuan Li, Yang Gao, Di Li, Kinwah Wu
doaj   +1 more source

A new search for distant radio galaxies in the Southern hemisphere -- III. Optical spectroscopy and analysis of the MRCR--SUMSS sample

, 2009
We have compiled a sample of 234 ultra-steep-spectrum(USS)-selected radio sources in order to find high-redshift radio galaxies (HzRGs). The sample is in the southern sky at -40 deg < DEC < -30 deg which is the overlap region of the 408-MHz Revised ...
Allen, Allen, Antonucci, Appenzeller, Athreya, B. M. Gaensler, Baker, Baker, Barthel, Barthel, Becker, Bhatnagar, Bicknell, Binette, Binette, Blundell, Blundell, Blundell, Bock, Bornancini, Bower, Broderick, Brookes, Brookes, Bryant, Burgess, C. De Breuck, Carilli, Cohen, Condon, Croft, Croston, Croton, Cruz, De Breuck, De Breuck, De Breuck, De Breuck, De Breuck, De Breuck, De Lucia, Dekker, Dopita, Eales, El Bouchefry, Feulner, Fioc, Gillingham, H. M. Johnston, Hambly, Helfand, Hobbs, Hopkins, Hopkins, J. J. Bryant, J. W. Broderick, Jarvis, Kapahi, Kellermann, Klamer, Klamer, Kodama, Kurk, Kurk, Laing, Large, Lehnert, Lilly, Madau, Martini, Mauch, McCarthy, McCarthy, Nelson, Owen, Pentericci, Pentericci, Prestage, R. W. Hunstead, Rees, Reuland, Riley, Rocca-Volmerange, Rodgers, Röttgering, Seymour, Silk, Skrutskie, Springel, Stanford, Steidel, Thomas, Urry, van Breugel, van Ojik, Vanden Berk, Venemans, Venemans, Villar-Martín, Villar-Martín, White, Willott, Willott   +102 more
core   +1 more source

A jet-cloud interaction in 3C34 at redshift z = 0.69 [PDF]

, 1997
We report the detection of a strong jet-cloud interaction at a distance of 120 kpc from the nucleus of the radio galaxy 3C34, which has redshift z=0.69.
Best, P. N., Longair, M. S., Röttgering, H. J. A.   +2 more
core   +2 more sources

A New 6–15 GHz Solar Radio Observation System

The Astrophysical Journal Supplement Series, 2023
In this study, we have developed a centimeter-band solar radio telescope covering the 6–15 GHz frequency band. The radio telescope has the outstanding advantages of a large instantaneous sampling bandwidth and wide frequency coverage.
Lei Zhang, Yanrui Su, Zhao Wu, Shuwang Chang, Yao Chen, Fabao Yan   +5 more
doaj   +1 more source

Flux density measurements of a complete sample of faint blazars [PDF]

, 2011
We performed observations with the Effelsberg 100-m radio telescope to measure flux densities and polarised emission of sources selected from the "Deep X-ray Radio Blazar Survey" (DXRBS) to better define their spectral index behaviour in the radio band ...
Abdo, Baars, Bondi, Caccianiga, Condon, F. Mantovani, Gioia, Gregory, Griffith, K.-H. Mack, Klein, Kollgaard, Landt, Laurent-Muehleisen, M. Bondi, Mantovani, Padrielli, Perlman, Perlman, Stickel, Stocke, White, Wood   +22 more
core   +1 more source

A Giant Metrewave Radio Telescope search for associated H I 21 cm absorption in GHz-peaked-spectrum sources [PDF]

, 2017
We report the first detections of associated H{\sc i} 21\,cm absorption in Gigahertz-peaked-spectrum (GPS) sources at high redshifts, $z > 1$, using the Giant Metrewave Radio Telescope (GMRT).
J. Aditya, Nissim Kanekar Inter-University Centre for Astronomy, Astrophysics, India, National Centre for Radio Astrophysics   +4 more
semanticscholar   +1 more source

Detecting the oscillation and propagation of the nascent dynamic solar wind structure at 2.6 solar radii using VLBI radio telescopes [PDF]

, 2022
Maoli Ma, Guifré Molera Calvés, Giuseppe Cimò, Ming Xiong, Peijia Li, Jing Kong, Peijin Zhang, Jiansen He, Lijia Liu, Pradyumna Kummamuru, Chuanpeng Hou, Jasper Edwards, Qinghui Liu, Zhong Chen, Zhanghu Chu, De Wu, Xu Zhao, Zhichao Wang, Songtao Han Quanquan Zhi, Yingkai Liu, Jonathan Quick, J. G. González, Cristina García Miró, Mikhail V. Kharinov, A. V. Mikhailov, A. Neidhardt, T. Venturi, M. Morsiani, G. Maccaferri, Bo Xia, Hua Zhang, Longfei Hao   +31 more
openalex   +1 more source

MID-Radio Telescope, Single Pixel Feed Packages for the Square Kilometer Array: An Overview

IEEE Journal of Microwaves, 2021
The Square Kilometre Array (SKA) project is an international effort to build the world's largest radio telescope, enabling science with unprecedented detail and survey speed.The project spans over a decade and is now at a mature stage, ready to enter the
Alice Pellegrini, Jonas Flygare, Isak P. Theron, Robert Lehmensiek, Adriaan Peens-Hough, Jamie Leech, Michael E. Jones, Angela C. Taylor, Robert E. J. Watkins, Lei Liu, Andre Hector, Biao Du, Yang Wu   +12 more
doaj   +1 more source

LUNASKA simultaneous neutrino searches with multiple telescopes

, 2011
The most sensitive method for detecting neutrinos at the very highest energies is the lunar Cherenkov technique, which employs the Moon as a target volume, using conventional radio telescopes to monitor it for nanosecond-scale pulses of Cherenkov ...
Aartsen, M., Bray, J. D., Brown, A., Ekers, R. D., James, C. W., McFadden, R. A., Phillips, C. J., Protheroe, R. J., Reynolds, J. E., Roberts, P.   +9 more
core   +1 more source