scholarly journals Pulsar searches of Fermi unassociated sources with the Effelsberg telescope

2012 ◽  
Vol 429 (2) ◽  
pp. 1633-1642 ◽  
Author(s):  
E. D. Barr ◽  
L. Guillemot ◽  
D. J. Champion ◽  
M. Kramer ◽  
R. P. Eatough ◽  
...  
Keyword(s):  
Pulsar Searches

scholarly journals Binary pulsar evolution: unveiled links and new species

2012 ◽  
Vol 8 (S291) ◽  
pp. 121-126
Author(s):  
Andrea Possenti
Keyword(s):  
New Species ◽  
Neutron Star ◽  
Evolutionary Path ◽  
Binary Pulsar ◽  
Galactic Field ◽  
New Class ◽  
Binary Pulsars ◽  
Low Mass ◽  
Pulsar Searches ◽  
Pulsar Evolution

AbstractIn the last years a series of blind and/or targeted pulsar searches led to almost triple the number of known binary pulsars in the galactic field with respect to a decade ago. The focus will be on few outliers, which are emerging from the average properties of the enlarged binary pulsar population. Some of them may represent the long sought missing links between two kinds of neutron star binaries, while others could represent the stereotype of new groups of binaries, resulting from an evolutionary path which is more exotic than those considered until recently. In particular, a new class of binaries, which can be dubbed Ultra Low Mass Binary Pulsars (ULMBPs), is emerging from recent data.

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.

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.

SENSITIVITY OF BLIND PULSAR SEARCHES WITH THEFERMILARGE AREA TELESCOPE

2011 ◽  
Vol 742 (2) ◽  
pp. 126 ◽  
Author(s):  
M. Dormody ◽  
R. P. Johnson ◽  
W. B. Atwood ◽  
A. Belfiore ◽  
I. A. Grenier ◽  
...  
Keyword(s):  
Pulsar Searches

scholarly journals The hunt for new pulsars with the Green Bank Telescope

2012 ◽  
Vol 8 (S291) ◽  
pp. 41-46
Author(s):  
Ryan S. Lynch
Keyword(s):  
Globular Clusters ◽  
Binary Systems ◽  
Radio Pulsars ◽  
Large Area ◽  
Pulsar Timing ◽  
Drift Scan ◽  
Radio Transients ◽  
Pulsar Searches ◽  
Green Bank Telescope ◽  
Rotating Radio Transients

AbstractThe Green Bank Telescope (GBT) is the largest fully steerable radio telescope in the world and is one of our greatest tools for discovering and studying radio pulsars. Over the last decade, the GBT has successfully found over 100 new pulsars through large-area surveys. Here I discuss the two most recent—the GBT 350 MHz Drift-scan survey and the Green Bank North Celestial Cap survey. The primary science goal of both surveys is to find interesting individual pulsars, including young pulsars, rotating radio transients, exotic binary systems, and especially bright millisecond pulsars (MSPs) suitable for inclusion in Pulsar Timing Arrays, which are trying to directly detect gravitational waves. These two surveys have combined to discover 85 pulsars to date, among which are 14 MSPs and many unique and fascinating systems. I present highlights from these surveys and discuss future plans. I also discuss recent results from targeted GBT pulsar searches of globular clusters and Fermi sources.

Elimination of red noise in pulsar searches

1996 ◽  
Vol 4 (3) ◽  
pp. 235-239 ◽  
Author(s):  
K.J. Orford
Keyword(s):  
Pulsar Searches

scholarly journals A Search for Pulsars Associated with Supernova Remnants in the Galaxy and the Magellanic Clouds

1983 ◽  
Vol 101 ◽  
pp. 495-497
Author(s):  
R. N. Manchester ◽  
I. R. Tuohy ◽  
N. D'Amico
Keyword(s):  
Supernova Remnants ◽  
Sampling Interval ◽  
Magellanic Clouds ◽  
Pulsar Emission ◽  
The Past ◽  
Observational Selection ◽  
Short Period ◽  
Interstellar Scattering ◽  
The Galaxy ◽  
Pulsar Searches

It is widely accepted and almost certainly true that both pulsars and supernova remnants (SNRs) are products of the collapse of a star at the end of its evolution. Given this, it is a considerable puzzle why, of the more than 120 known SNRs in the Galaxy, only two have unambiguously associated pulsars. Beaming of the pulsar emission probably accounts for the absence of detectable pulsars in up to 80% of the SNRs; however, this still leaves 20–30 SNRs in which one should be able to detect a pulsar. Vivekanand and Narayan (1981) show that there is a deficit of pulsars with periods ≲0.5 s and suggest that a majority of pulsars do not become active for a time ∼104 years after their birth. This would account for the lack of pulsar-SNR associations. It is however possible that the observed lack of short-period pulsars is simply due to observational selection. In the past, most pulsar searches have been made at relatively low radio frequencies, typically close to 400 MHz. At these frequencies SNRs are bright and the effects of interstellar scattering are significant, especially for distant, short-period pulsars. Further, most of these searches have used a relatively long sampling interval, typically about 20 ms, which further reduces the sensitivity for short-period pulsars.

scholarly journals Discoveries of Rotating Radio Transients in the 350 MHz Green Bank Telescope Drift-scan Survey

2012 ◽  
Vol 8 (S291) ◽  
pp. 107-110
Author(s):  
Chen Karako-Argaman ◽  
Keyword(s):  
Radio Emission ◽  
Post Processing ◽  
Drift Scan ◽  
Radio Transients ◽  
Processing Techniques ◽  
Pulsar Searches ◽  
Green Bank Telescope ◽  
Rotating Radio Transients

AbstractRotating Radio Transients (RRATs) are a class of pulsars characterized by sporadic bursts of radio emission, which make them difficult to detect in typical periodicity-based pulsar searches. Using newly developed post-processing techniques for automatically identifying single bright astrophysical pulses, such as those emitted from RRATs, we have discovered approximately 30 new RRAT candidates in data from the Green Bank Telescope 350 MHz drift-scan survey. A total of 6 of these have already been confirmed and the remainder look extremely promising. Here we describe these techniques and present the most recent results on these new RRAT candidates.

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