Pulsars and interstellar medium: Multiple regression analysis of related parameters |
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| Authors: | E Antonello M Fracassini |
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| Institution: | (1) Osservatorio Astronomico di Brera, Milano-Merate, Italia;(2) Dipartimento di Fisica della Università di Milano, Italia |
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| Abstract: | An empirical relation which relates the 408 MHz galactic continuum background temperature (408GCBT) to dispersion measures, position and radio-luminosity of 325 pulsars is obtained by means of multple stepwise regression analysis. This relation showns that pulsars may be considered as galactic probes for the distribution of 408GCBT and interstellar electron density (IED) in interstellar medium (ISM).Peculiar pulsars (O-C ±2.5 ) point out galactic regions where the observedT
408 are higher (or lower) andn
e
lower (or higher) than the averaged ones.Normal pulsars (–2.5) show galactic regions where observed and computedT
408 andn
e
are in agreement, on, the average.Standard pulsars (O-C ±0.05) show galactic regions where observed and computedT
408 andn
e
are in good agreement. Recent models of pulsar disk systems, suggested by Michel and Dessler (1981) could justify the conclusions drawn for peculiar pulsars having O-C>2.5. |
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| Keywords: | |
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