Using the intensity modulation index to test pulsar radio emission models

@article{Jenet2003UsingTI,
  title={Using the intensity modulation index to test pulsar radio emission models},
  author={Fredrick A. Jenet and Janusz A. Gil},
  journal={The Astrophysical Journal},
  year={2003},
  volume={596}
}
This Letter explores the possibility of testing pulsar radio emission models by observing pulse-to-pulse intensity modulation. It is shown that a relationship between a pulsar's period, period derivative, and intensity modulation is a natural consequence of at least one theoretical model of radio pulsar emission. It is proposed that other models may also predict a similar correlation. The exact form of the relationship will depend on the model in question. Hence, observations of intensity… 
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References

SHOWING 1-10 OF 31 REFERENCES
The Statistics of Radio Pulsars: A Spark Model
We use Monte Carlo techniques to relate a theoretical pulsar emission model to the observed distributions of pulse period, magnetic field strength, distance, and luminosity of radio pulsars. We…
The Velocity distribution of isolated radio pulsars
We infer the velocity distribution of radio pulsars based on large-scale 0.4 GHz pulsar surveys. We do so by modeling the evolution of the locations, velocities, spins, and radio luminosities of…
Nanosecond radio bursts from strong plasma turbulence in the Crab pulsar
TLDR
The discovery of isolated, highly polarized, two-nanosecond subpulses within the giant radio pulses from the Crab pulsar is reported, making them by far the smallest objects ever detected and resolved outside the Solar System, and the brightest transient radio sources in the sky.
Pulse-to-pulse intensity modulation and drifting subpulses in recycled pulsars
We report the detection of pulse-to-pulse periodic intensity modulations, in observations of recycled pulsars. Even though the detection of individual pulses was generally not possible due to their…
Single Pulse Characteristics of the Millisecond Radio Pulsar PSR B1937+21 at 430 MHz
The single-pulse characteristics of the millisecond pulsar PSR B1937+21 are studied using the recently installed Caltech baseband recorder at the Arecibo Radio Observatory in Puerto Rico. This is the…
Giant Radio Pulses from a Millisecond Pulsar
We have observed 1.7 × 106 individual pulses from the millisecond pulsar PSR B1937+21. About one pulse in 10,000 has more than 20 times the mean "pulse-on" flux density, and individual pulses as…
The Spark-associated Soliton Model for Pulsar Radio Emission
We propose a new, self-consistent theory of coherent pulsar radio emission based on the nonstationary sparking model of Ruderman & Sutherland, modified by Gil & Sendyk. The polar cap is populated by…
Timing and scintillations of the millisecond pulsar 1937 + 214
Pulse shapes, arrival times, and interstellar scintillations of the 1.56 ms PSR 1937 + 214 pulsar are analyzed at frequencies from 0.32 to 1.4 GHz using data obtained from April 1983 to December…
Space velocities of radio pulsars from interstellar scintillations
Scintillation observations are used to determine the space velocities of 71 radio pulsars, including most of the 26 objects with proper motions derived from interferometry. The scintillation velocity…
Multifrequency Observations of Giant Radio Pulses from the Millisecond Pulsar B1937+21
Giant pulses are short, intense outbursts of radio emission with a power-law intensity distribution that have been observed from the Crab pulsar and PSR B1937+21. We have undertaken a systematic…
...
1
2
3
4
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