scholarly journals Pulsar Searches at Effelsberg

2004 ◽  
Vol 218 ◽  
pp. 133-134 ◽  
Author(s):  
B. Klein ◽  
M. Kramer ◽  
P. Müller ◽  
R. Wielebinski
Keyword(s):  
Radio Telescope ◽  
Galactic Center ◽  
Millisecond Pulsars ◽  
Highly Dispersed ◽  
L Band ◽  
Under Construction ◽  
5 Ghz ◽  
Key Aspects ◽  
Pulsar Searches

We report on the progress of our search for highly dispersed pulsars near the Galactic Center at 5 GHz using the 100-m radio telescope in Effelsberg. We also present key aspects of our new survey for millisecond pulsars at 21 cm in parts of the northern sky. This survey will greatly benefit from the L-band multibeam receiver and a new FFT-based backend which are currently under construction at the MPIfR.

scholarly journals FAST low frequency pulsar survey

2012 ◽  
Vol 8 (S291) ◽  
pp. 577-579
Author(s):  
Youling Yue ◽  
Di Li ◽  
Rendong Nan
Keyword(s):  
Radio Telescope ◽  
Low Frequency ◽  
Millisecond Pulsars ◽  
New Normal ◽  
Drift Scan ◽  
Under Construction

AbstractThe Five-hundred-meter Aperture Spherical radio Telescope (FAST) is under construction and will be commissioned in September 2016. A low frequency 7-beam receiver working around 400 MHz is proposed for FAST early science. It will be optimized for a whole FAST sky drift-scan pulsar survey. Simulations show that about 1500 new normal pulsars will be discovered, as while as about 200 millisecond pulsars.

scholarly journals Pulsar Searches at Effelsberg — Past, Present & Future

2000 ◽  
Vol 177 ◽  
pp. 11-16
Author(s):  
D.R. Lorimer ◽  
M. Kramer
Keyword(s):  
Radio Telescope ◽  
Galactic Plane ◽  
Progress Report ◽  
Galactic Centre ◽  
Bright Future ◽  
The World ◽  
Highly Dispersed ◽  
Pulsar Searches

AbstractIt is fair to say that pulsar searches with the 100-m Effelsberg telescope have had something of a checkered history — after all, for many years, this was the largest radio telescope in the world never to have found a pulsar! This situation has, happily, changed. In this review we summarize recent discoveries of weak pulsars along the Galactic plane, give a progress report on a survey for highly dispersed pulsars in the Galactic centre and, in the spirit of this meeting, speculate on what should be a bright future for pulsar searches with this instrument.

scholarly journals Studying pulsars with the SKA and other new facilities

2000 ◽  
Vol 177 ◽  
pp. 711-716
Author(s):  
Jon Bell
Keyword(s):  
Radio Telescope ◽  
Technology Development ◽  
Cost Effective ◽  
Cost Effective Approach ◽  
Receiver System ◽  
Key Features ◽  
5 Ghz ◽  
Pulsar Searches ◽  
New Facility ◽  
New Facilities

AbstractThe Square Kilometre Array (SKA) is a proposed next generation radio telescope. Between now and 2005 this project is in a technology development and prototyping phase, with construction likely to begin in ~ 2010. This paper describes what the SKA may be like, its key features, the motivation for building it and where you can access more details about it. Its is important to see any new facility in context, so other new facilities are also discussed. Avenues for future extensibility of the SKA other telescopes are covered, with some emphasis on multiple beam systems. Some suggestions for useful pulsar experiments and pulsar searches strategies are summarised. A conclusion is that the SKA may not be the most cost effective way to search for pulsars and that a 128 beam receiver system on an Arecibo like telescope working between 1 and 5 GHz may be a more cost effective approach.

scholarly journals Finding Pulsars at Parkes

2001 ◽  
Vol 18 (1) ◽  
pp. 1-11 ◽  
Author(s):  
R. N. Manchester
Keyword(s):  
Radio Telescope ◽  
Globular Clusters ◽  
Millisecond Pulsars ◽  
Statistical Estimates ◽  
Detection Algorithms ◽  
The World ◽  
Detection Instrument ◽  
Pulsar Searches ◽  
Galactic Distribution ◽  
Unique Individual

AbstractThere are many reasons why it is important to increase the number of known pulsars. Not only do pulsar searches continue to improve statistical estimates of, for example, pulsar birthrates, lifetimes and the Galactic distribution, but they continue to turn up interesting and, in some cases, unique individual pulsars. In the early days of pulsar astronomy, the Molonglo radio telescope led the world as a pulsar detection instrument. However, the Parkes radio telescope, with its frequency versatility and greater tracking ablility, combined with sensitive receivers and powerful computer detection algorithms, is now the world’s most successful telescope at finding pulsars. The Parkes multibeam survey, begun in 1997, by itself will come close to doubling the number of known pulsars. Parkes has also been very successful at finding millisecond pulsars (MSPs), especially in globular clusters. One third of the known MSPs have been found in just one cluster, 47 Tucanae.

Resolved Millisecond Pulsars are Consistent with the Galactic Center Excess (Invited Talk)

2018 ◽  
Author(s):  
Chris Gordon ◽  
Harrison Ploeg ◽  
Roland Crocker ◽  
Oscar Macias
Keyword(s):  
Galactic Center ◽  
Millisecond Pulsars

scholarly journals SPAN512: A new mid-latitude pulsar survey with the Nançay Radio Telescope

2012 ◽  
Vol 8 (S291) ◽  
pp. 375-377 ◽  
Author(s):  
Gregory Desvignes ◽  
Ismaël Cognard ◽  
David Champion ◽  
Patrick Lazarus ◽  
Patrice Lespagnol ◽  
...  
Keyword(s):  
Radio Telescope ◽  
Large Scale ◽  
High Time ◽  
Frequency Resolution ◽  
Integration Time ◽  
Sensitivity Limit ◽  
Long Period ◽  
Large Bandwidth ◽  
L Band ◽  
Better Than

AbstractWe present an ongoing survey with the Nançay Radio Telescope at L-band. The targeted area is 74° ≲ l < 150° and 3.5° < |b| < 5°. This survey is characterized by a long integration time (18 min), large bandwidth (512 MHz) and high time and frequency resolution (64 μs and 0.5 MHz) giving a nominal sensitivity limit of 0.055 mJy for long period pulsars. This is about 2 times better than the mid-latitude HTRU survey, and is designed to be complementary with current large scale surveys. This survey will be more sensitive to transients (RRATs, intermittent pulsars), distant and faint millisecond pulsars as well as scintillating sources (or any other kind of radio faint sources) than all previous short-integration surveys.

scholarly journals Adaptive optics $\vec{L}$-band observations of the Galactic Center region

2001 ◽  
Vol 376 (1) ◽  
pp. 124-135 ◽  
Author(s):  
Y. Clénet ◽  
D. Rouan ◽  
E. Gendron ◽  
J. Montri ◽  
F. Rigaut ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Galactic Center ◽  
Center Region ◽  
L Band

scholarly journals Status of the Thai 40-m Radio Telescope

2017 ◽  
Vol 13 (S337) ◽  
pp. 346-347
Author(s):  
Phrudth Jaroenjittichai
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Time Domain ◽  
Phased Array ◽  
Low Frequency ◽  
Great Leap ◽  
Great Leap Forward ◽  
Astronomical Research ◽  
L Band ◽  
K Band

AbstractSince the first light of the 2.4-m Thai National Telescope in 2013, Thailand foresees another great leap forward in astronomy. A project known as “Radio Astronomy Network and Geodesy for Development” (RANGD) by National Astronomical Research Institute of Thailand (NARIT) has been approved for year 2017-2021. A 40-m radio telescope has been planned to operate up to 115-GHz observation with prime-focus capability for low frequency and phased array feed receivers. The telescope’s first light is expected in late 2019 with a cryogenics K-band and L-band receivers. RFI environment at the site has been investigated and shown to be at reasonable level. A 13-m VGOS telescope is also included for geodetic applications. Early single-dish science will focus on time domain observations, such as pulsars and transients, outbursts and variability of maser and AGN sources.

scholarly journals Searching for pulsars in future radio continuum surveys

2017 ◽  
Vol 13 (S337) ◽  
pp. 328-329
Author(s):  
Shi Dai ◽  
Simon Johnston ◽  
George Hobbs
Keyword(s):  
Black Hole ◽  
Radio Continuum ◽  
Galactic Centre ◽  
Dispersion Measure ◽  
Millisecond Pulsars ◽  
Square Kilometre Array ◽  
Orbital Modulation ◽  
Pulsar Searches

AbstractRadio continuum surveys are equally sensitive to all pulsars, not affected by dispersion measure smearing, scattering or orbital modulation of spin periods, and therefore allow us to search for extreme pulsars, such as sub-millisecond pulsars, pulsar-black hole systems and pulsars in the Galactic Centre. As we move towards the Square Kilometre Array (SKA) era, searching for pulsars in continuum images will complement conventional pulsar searches, and make it possible to find extreme objects.

A Wide Survey in NH3 Lines of the Central 200 pc Around the Galactic Center with Kagoshima 6 Meter Radio Telescope

2008 ◽  
pp. 361-361
Author(s):  
Takumi Nagayama ◽  
Toshihiro Omodaka ◽  
Toshihiro Handa ◽  
Tsuyoshi Sawada ◽  
Hayati Bebe Iahak ◽  
...  
Keyword(s):  
Radio Telescope ◽  
Galactic Center
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