Results 51 to 60 of about 133,948 (219)

Radio Emission from GRO J1655-40 during the 1994 Jet Ejection Episodes [PDF]

, 2000
We report multifrequency radio observations of GRO J1655-40 obtained with the Australia Telescope Compact Array, the Molonglo Observatory Synthesis Telescope and the Hartebeesthoek Radio Astronomy Observatory at the time of the major hard X-ray and radio
Ball L., Campbell-Wilson D., D. C. Hannikainen, D. Campbell‐Wilson, D. J. McKay, D. P. Smits, Frater R. H., Hannikainen D., K. Wu, Mills B. Y., Ott M., O’Dea C. P., R. J. Sault, R. W. Hunstead, Robertson J. G.   +14 more
core   +3 more sources

Routing Optimization of Cable‐Driven Octopus‐Inspired Manipulators With Minimal Actuation via Genetic Algorithm and Finite Element Method

Advanced Intelligent Systems, EarlyView.
Soft robotic arms are promising for gentle grasping but often rely on bulky actuation systems. This work presents a computational design framework that optimizes tendon number and routing to achieve target grasps with fewer actuators. Validated on an octopus‐inspired underwater arm, the approach enables efficient, underactuated soft manipulators for ...
Michele Martini, Emanuele Solfiti, Alessio Mondini, Emanuela Del Dottore, Alberto Parmiggiani, Edoardo Sinibaldi, Barbara Mazzolai   +6 more
wiley   +1 more source

Experimental verification of passive radar space object detection with a single low‐frequency array radio telescope

IET Radar, Sonar & Navigation
The paper focuses on the results of experimental research on the possibility of passive space object detection using a single radio telescope from the European Low‐Frequency Array (LOFAR) network of astronomical radio telescopes.
Konrad Jędrzejewski, Mateusz Malanowski, Krzysztof Kulpa, Mariusz Pożoga   +3 more
doaj   +1 more source

Commensal observing with the Allen Telescope array: software command and control

, 2010
The Allen Telescope Array (ATA) is a Large-Number-Small-Diameter radio telescope array currently with 42 individual antennas and 5 independent back-end science systems (2 imaging FX correlators and 3 time domain beam formers) located at the Hat Creek ...
Ackermann, Robert, Barott, William C., Gutierrez-Kraybill, Colby, Harp, Gerald, Keating, Garrett K., Kilsdonk, Tom, MacMahon, David, Richards, Jon, Williams, Peter K. G.   +8 more
core   +1 more source

Observing pulsars and fast transients with LOFAR [PDF]

, 2011
Low frequency radio waves, while challenging to observe,are a rich source of information about pulsars. The LOw Frequency ARray (LOFAR) is a new radio interferometer operating in the lowest 4 octaves of the ionospheric “radio window”: 10–240 MHz, that ...
Alexov, A., Anderson, K., Bentum, M.J., Coenen, T., Hessels, J.W.T., Stappers, B.W.   +5 more
core   +2 more sources

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

Radio and near-infrared observations of the steep spectrum Galactic plane radio source WKB 0314+57.8 [PDF]

, 2004
Radio and near-infared observations towards the steep spectrum Galactic plane radio source WKB 0314+57.8 are presented, in order to clarify the nature of this source.
Bhatnagar, S., Gates, E. L., Green, D. A., Lacy, M., Warner, P. J.   +4 more
core   +1 more source

Today's Radio Telescopes [PDF]

Nature, 1968
Radioastronomical Methods of Antenna Measurements By A. D. Kuz'min and A. E. Salomonovich. Translated by K. N. Trirogoff. Translation edited by Ernest Jacobs. (Electrical Science: a Series of Monographs and Texts.) Pp. xvi + 182. (New York: Academic Press, Inc.; London: Academic Press, Inc. (London), Ltd., 1966.) $8.50.
openaire   +1 more source

Deep radio images of the HEGRA and Whipple TeV sources in the Cygnus OB2 region [PDF]

, 2007
Context. The modern generation of Cherenkov telescopes has revealed a new population of gamma-ray sources in the Galaxy. Some of them have been identified with previously known X-ray binary systems while other remain without clear counterparts a lower ...
Abdo, Aharonian, Aharonian, Aharonian, Bondi, Bosch-Ramon, Butt, Butt, C. H. Ishwara Chandra, Contreras, Furst, Garn, J. M. Paredes, J. Martí, Konopelko, Landt, Martí, Mukherjee, Paredes, Paredes, Schoenmakers, Torres, V. Bosch-Ramon   +22 more
core   +3 more sources

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source