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Related papers: The First Observations with the GRT at Parkes

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We present four new fast radio bursts discovered in a search of the Parkes 70-cm pulsar survey data archive for dispersed single pulses and bursts. We searched dispersion measures (DMs) ranging between 0 to 5000 pc cm$^{-3}$ with the…

High Energy Astrophysical Phenomena · Physics 2022-08-17 F. Crawford , S. Hisano , M. Golden , T. Kikunaga , A. Laity , D. Zoeller

The Liverpool Telescope, owned and operated by Liverpool John Moores University and situated at Roque de los Muchachos, La Palma, is the first 2-m, fully instrumented robotic telescope. We plan to use the LT in conjunction with Gamma Ray…

Astrophysics · Physics 2007-05-23 A. Gomboc , M. F. Bode , D. Carter , C. G. Mundell , A. M. Newsam , R. J. Smith , I. A. Steele

Radio detection of extensive air showers initiated in the Earth's atmosphere has made tremendous progress in the last decade. Today, radio detection is routinely used in several cosmic-ray observatories. The physics of the radio emission in…

Instrumentation and Methods for Astrophysics · Physics 2017-01-12 Tim Huege

This contribution to the proceedings of "A New Golden Age for Radio Astronomy" is simply intended to give some of the highlights from pulsar observations with LOFAR at the time of its official opening: June 12th, 2010. These observations…

The first observations with the 25 cm telescope of the Shumen Astronomical Observatory led to the following conclusions: (a) Intra-night observations of variable stars with an amplitude larger than 0.1 mag are possible down to 14 mag with…

Instrumentation and Methods for Astrophysics · Physics 2018-12-18 Diana Kjurkchieva , Sunay Ibryamov , Borislav Borisov , Dragomir Marchev , Velimir Popov , Dinko Dimitrov

$\gamma$-ray bursts (GRBs) have puzzled astronomers since their accidental discovery in the sixties. The BATSE detector on COMPTON-GRO satellite has been detecting GRBs for the last four years at a rate of one burst per day. Its findings…

Astrophysics · Physics 2007-05-23 Tsvi Piran

Technology leads discovery in astronomy, as in all other areas of science, so growth in technology leads to the continual stream of new discoveries which makes our field so fascinating. Derek de Solla Price had analysed the discovery…

Instrumentation and Methods for Astrophysics · Physics 2010-04-27 R. D. Ekers

The radiative mechanism of coherent radio emission has remained an enigma since the discovery of pulsars, even the emergence of fast radio bursts (FRBs), which exhibit similarities to the single-pulse behavior of pulsars and have opened a…

Gravity plays an important part in the experiments and discoveries of the modern world. But how was it discovered? Surely Newton and Einstein were not the only people to observe it and account for it. It had been a long path before the full…

Popular Physics · Physics 2020-12-01 Arshia Anjum , Sriman Srisa Saran Mishra

The redshift where the first stars formed is an important and unknown milestone in cosmological structure formation. The evidence linking gamma ray bursts (GRBs) with star formation activity implies that the first GRBs occurred shortly…

Astrophysics · Physics 2009-11-07 James E. Rhoads

Our initial impressions of astronomical objects was that they are inherently "static" over the course of any reasonably long observation. However, with the discovery of quasars and their scintillation in 1963-64, we learnt that there are…

High Energy Astrophysical Phenomena · Physics 2026-05-07 Kenil Rajendrabhai Ajudiya

An extensive search for distant Giant radio galaxies on the southern hemisphere is justified. We emphasize the crucial role of optical spectroscopy in determination of their basic physical parameters, i.e. the distance, projected linear…

Astrophysics · Physics 2007-05-23 J. Machalski , S Zola , D. Koziel , M. Jamrozy

We have observed microquasar GRS 1915+105 at 1.28 GHz for 8 days from June 18 to July 1, 2001 using Giant Metrewave Radio Telescope (GMRT). We have seen several isolated radio baby flares of varying intensity and duration. We have also…

Astrophysics · Physics 2007-05-23 J. S. Yadav , C. H. Ishwara-Chandra , A. Pramesh Rao , G. G. Pooley

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…

Instrumentation and Methods for Astrophysics · Physics 2009-08-11 Joeri van Leeuwen , the ATA team

The recent detections of the afterglow phase of long gamma-ray bursts (lGRBs) at very high energies (VHE, >100 GeV) mark a significant advance in astrophysics of transient phenomena, offering deeper insights into the acceleration…

In this short note we discuss the case of the thought experiments on water-filled telescopes and their realizations during 18th and 19th century. The story of those instruments shows that the scientific progress occurs in a curious way,…

History and Philosophy of Physics · Physics 2014-01-23 E. Antonello

We revisit the issue of ripples in the primordial power spectra caused by trans-Planckian physics, and the potential for their detection by future cosmological probes. We find that for reasonably large values of the first slow-roll…

Astrophysics · Physics 2009-11-13 Jan Hamann , Steen Hannestad , Martin S. Sloth , Yvonne Y. Y. Wong

To meet the scientific goals of the Thirty Meter Telescope Project, full diffraction-limited performance is required from the outset and hence the entire observatory is being designed, as a system, to achieve this. The preliminary design…

Astrophysics · Physics 2009-11-13 David Crampton , Luc Simard , David Silva

At low redshifts powerful radio sources are uniquely associated with massive galaxies, and are thought to be powered by supermassive black holes. Modern 8m -- 10m telescopes may be used used to find their likely progenitors at very high…

Astrophysics · Physics 2015-06-24 Wil van Breugel