DocumentCode :
1929889
Title :
A survey of nulling pulsars with Giant Meterwave radio Telescope
Author :
Gajjar, Vishal ; Joshi, Bhal Chandra ; Kramer, Michael
Author_Institution :
Nat. Centre for Radio Astrophys., Pune, India
fYear :
2011
fDate :
13-20 Aug. 2011
Firstpage :
1
Lastpage :
4
Abstract :
Several pulsars show sudden cessation of pulsed emission, which is known as pulsar nulling. In this paper, we are reporting nulling behaviour of 15 pulsars among which five were discovered recently in Parks Multibeam Survey and never reported any nulling behaviour. We are also reporting refined nulling fraction for four known nulling pulsar where only an upper limit was available earlier. We are presenting first time results on reduction in the pulsed energy during the null phase for all our samples. The main aim of this study is to bring out the fact that nulling fraction does not quantify nulling in full detail as pulsar with similar nulling fraction exhibit different nulling behaviour.
Keywords :
pulsars; radiotelescopes; stellar radiation; stellar spectra; Giant Meterwave Radiotelescope; J0814+7429; J0820-1350; J0837-4135; J1115+5030; J1639-4359; J1701-3726; J1715-4034; J1725-4043; J1738-2330; J1901+0413; J2022+2854; J2022+5154; J2037+1942; J2113+4644; J2321+6024; Parks Multibeam Survey; null phase; nulling pulsar survey; pulsed emission cessation; pulsed energy; Astrophysics; Correlation; Histograms; Magnetic cores; Noise measurement; Radio astronomy; Timing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
Type :
conf
DOI :
10.1109/URSIGASS.2011.6051297
Filename :
6051297
Link To Document :
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