scholarly journals Analysis of single pulse radio flux measurements of PSR B1133+16 at 4.85 and 8.35 GHz

2014 ◽  
Vol 440 (1) ◽  
pp. 457-464 ◽  
Author(s):  
K. Krzeszowski ◽  
O. Maron ◽  
A. Słowikowska ◽  
J. Dyks ◽  
A. Jessner
Keyword(s):  
Single Pulse ◽  
Radio Flux ◽  
Pulse Radio ◽  
Flux Measurements

scholarly journals Results from the 1977 coordinated observing campaign on HDE 226868 = Cygnus X-1

1979 ◽  
Vol 83 ◽  
pp. 297-298
Author(s):  
C. T. Bolton
Keyword(s):  
United States ◽  
Great Britain ◽  
Soviet Union ◽  
The United States ◽  
Radio Flux ◽  
International Astronomical Union ◽  
X Ray ◽  
The Soviet Union ◽  
International Astronomical ◽  
Flux Measurements

A coordinated campaign of radio, optical, and x-ray observations of the bright x-ray source Cygnus X-1 took place August 7–21, 1977 under sponsorship of Commission 42 of the International Astronomical Union. Radio flux measurements, optical spectra, photometry, and polarimetry were obtained during this period by ten groups from Canada, Great Britain, the Soviet Union, and the United States. The x-ray flux was monitored continuously by the SAS-3 satellite between August 11.0 and 17.0.

scholarly journals SINGLE-PULSE RADIO OBSERVATIONS OF THE GALACTIC CENTER MAGNETAR PSR J1745–2900

2015 ◽  
Vol 814 (1) ◽  
pp. 5 ◽  
Author(s):  
Zhen Yan ◽  
Zhi-Qiang Shen ◽  
Xin-Ji Wu ◽  
R. N. Manchester ◽  
P. Weltevrede ◽  
...  
Keyword(s):  
Galactic Center ◽  
Single Pulse ◽  
Radio Observations ◽  
Pulse Radio

scholarly journals Single-Pulse Intensity Fluctuations by Cross-Correlation with Longitude of the Average Profile

1992 ◽  
Vol 128 ◽  
pp. 271-277
Author(s):  
M.V. POPOV ◽  
W. Sieber
Keyword(s):  
Spectral Analysis ◽  
Radio Emission ◽  
Cross Correlation ◽  
Regular Structure ◽  
Single Pulse ◽  
Pulse Intensity ◽  
Pulse Radio ◽  
Average Profile ◽  
Intensity Fluctuations

Single-pulse radio emission from pulsars has been observed to vary both in intensity and position inside the pulse window. In some cases the variations show a rather regular structure (drifting subpulses). Such a regular structure can clearly be studied by fluctuation spectral analysis. The analysis has identified some particular peculiarities in the fluctuation spectra at different longitudes of the pulse window in many pulsars (Backer 1973, Page 1973, Popov and Smirnova 1982). In pulsars with complex integrated profiles (PSR 1919+21, PSR 1237+25) narrow features in the fluctuation spectra vary strongly with longitude, at some longitudes being quite undistinguishable.

scholarly journals The LOFAR Tied-Array All-Sky Survey (LOTAAS): Characterization of 20 pulsar discoveries and their single-pulse behavior

2019 ◽  
Author(s):  
D Michilli ◽  
C Bassa ◽  
S Cooper ◽  
J W T Hessels ◽  
V I Kondratiev ◽  
...  
Keyword(s):  
Large Fraction ◽  
Low Frequency ◽  
Single Pulse ◽  
Sky Survey ◽  
Present Complex ◽  
Complex Shapes ◽  
Flux Measurements ◽  
Fast Transients ◽  
Timing Models

Abstract We are using the LOw-Frequency ARray (LOFAR) to perform the LOFAR Tied-Array All-Sky (LOTAAS) survey for pulsars and fast transients. Here we present the astrometric and rotational parameters of 20 pulsars discovered as part of LOTAAS. These pulsars have regularly been observed with LOFAR at 149 MHz and the Lovell telescope at 1532 MHz, supplemented by some observations with the Lovell telescope at 334 MHz and the Nançay Radio Telescope at 1484 MHz. Timing models are calculated for the 20 pulsars, some of which are among the slowest-spinning pulsars known. PSR J1236−0159 rotates with a period P ∼ 3.6 s, while 5 additional pulsars show P > 2 s. Also, the spin-down rates $\dot{P}$ are, on average, low, with PSR J0815+4611 showing $\dot{P} \sim 4\times 10^{-18}$. Some of the pulse profiles, generically single-peaked, present complex shapes evolving with frequency. Multi-frequency flux measurements show that these pulsars have generically relatively steep spectra but exceptions are present, with values ranging between ∼−4 and −1. Among the pulsar sample, a large fraction shows large single-pulse variability, with 4 pulsars being undetectable more than $15\%$ of the time and one tentatively classified as a Rotating Radio Transient. Two single-peaked pulsars show drifting sub-pulses.

Pyrolysis of methane in a single pulse shock tube

1972 ◽  
Vol 22 (3) ◽  
pp. 303-317 ◽  
Author(s):  
D. H. Napier ◽  
N. Subrahmanyam
Keyword(s):  
Shock Tube ◽  
Single Pulse
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