X-ray spectra of Z sources

Dimitrios Psaltis, Frederick K. Lamb, Guy S. Miller

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

A physically consistent model has been proposed that seeks to explain in a unified way the X-ray spectra and rapid variability of the Z sources and other weakly magnetic neutron stars in low-mass systems. Here we describe a simple, four-parameter spectral model derived from the unified model that accurately reproduces the X-ray colors, spectra, and count rates of the Z sources. In this model, photons are produced primarily by electron cyclotron emission in the neutron star magnetosphere and are then Comptonized in the magnetosphere, hot central corona, and inward radial flow. In addition to explaining their Z tracks, the model explains several other previously unexplained properties of the Z sources.

Original languageEnglish (US)
JournalAstrophysical Journal
Volume454
Issue number2 PART 2
StatePublished - Dec 1 1995
Externally publishedYes

Fingerprint

x rays
magnetospheres
neutron stars
magnetosphere
magnetic stars
radial flow
coronas
corona
cyclotrons
color
electron
photons
electrons
rate
parameter

Keywords

  • Radiation mechanisms: thermal
  • Stars: neutron
  • X-rays: stars

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Psaltis, D., Lamb, F. K., & Miller, G. S. (1995). X-ray spectra of Z sources. Astrophysical Journal, 454(2 PART 2).

X-ray spectra of Z sources. / Psaltis, Dimitrios; Lamb, Frederick K.; Miller, Guy S.

In: Astrophysical Journal, Vol. 454, No. 2 PART 2, 01.12.1995.

Research output: Contribution to journalArticle

Psaltis, D, Lamb, FK & Miller, GS 1995, 'X-ray spectra of Z sources', Astrophysical Journal, vol. 454, no. 2 PART 2.
Psaltis D, Lamb FK, Miller GS. X-ray spectra of Z sources. Astrophysical Journal. 1995 Dec 1;454(2 PART 2).
Psaltis, Dimitrios ; Lamb, Frederick K. ; Miller, Guy S. / X-ray spectra of Z sources. In: Astrophysical Journal. 1995 ; Vol. 454, No. 2 PART 2.
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