J/AZh/84/685 Scattering of pulsar radio emission (Kuz'min+, 2007)
Measurements of the scattering of pulsar radio emission.
Kuz'min A.D., Losovskii B.Ya., Lapaev K.A.
<Astron. Zh. 84, 685 (2007)>
=2007AZh....84..685K 2007AZh....84..685K
=2007ARep...51..615K 2007ARep...51..615K
ADC_Keywords: Pulsars
Abstract:
Measurements of the broadening of pulsar pulses by scattering in the
interstellar medium are presented for a complete sample of 100 pulsars
with Galactic longitudes from 6° to 311° and distances to three
kiloparsec. The dependences of the scattering on the dispersion
measure (tausc(DM)∝DMalpha), frequency
(tausc(nu)∝nu-gamma), Galactic longitude,
and distance to the pulsar are analyzed.
Description:
The measurements were carried out from 2003 to 2005 at 111, 60, and
40MHz on the Large Phased Array and DKR radio telescopes of the
PushchinoRadio Astronomy Observatory (Astr o Space Center, Lebedev
Physical Institute).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table13.dat 54 116 Measurements of the pulse scatter-broadening
(table 1) and level of turbulence toward the
pulsars (table 3)
table2.dat 37 18 Frequency dependence of the pulse
scatter-broadening
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Byte-by-byte Description of file: table13.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- PSR PSR name
14- 19 F6.2 pc/cm3 DM ?=- Dispersion measure
21- 23 I3 MHz Freq Frequency
25- 29 F5.1 ms tausc Measured scatter-broadening
(duration of the pulse)
31- 35 F5.1 ms e_tausc ? Uncertainty in tausc
38- 42 F5.2 [s] log(tau100) ? logarithm of the scatter-broadening
(for tausc in s) reduced to a frequency
of 100MHz
44- 48 F5.1 deg GLON Galactic longitude
50- 54 F5.2 --- logC2n logarithm of turbulence level, in m-20/3
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- PSR PSR name
14- 16 I3 MHz Freq1 Frequency range (lower value)
17 A1 --- --- [-]
18- 21 I4 MHz Freq2 Frequency range (upper value)
23- 24 I2 --- Freq2/Freq1 Frequency ratio
26- 27 I2 --- N Number of frequencies used to determine gamma
29- 32 F4.2 --- Gamma Measured power-low index gamma (1)
34- 37 F4.2 --- e_Gamma rms uncertainty on gamma
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Note (1): tausc(nu)∝nu-gamma
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History:
From electronic version of the journal
(End) Veta Avedisova [INASAN], Patricia Vannier [CDS] 11-Mar-2008