Fast variations in the period of a pulsar in the x-ray source 1H 1909+096

Journal Article · Thu Jul 15 04:00:00 EDT 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/160124· OSTI ID:6576816

Sadeh, D; Livio, M

The known X-ray source 1H 1909+096 was found at a state of high intensity on 1977 October 15, when 5 ms accumulation data was transmitted by the HEAO A-1 experiment. During that time, this source was found to pulsate with a period of approx.15.25 ms. This period was found to change during the 10 s of scanning through the source. The expectation for this to occur at random is calculated and found to be very low (10/sup -11/). A theoreticaldiscussion and two models are presented: (1) nonradial g-mode oscillation, and (2) torsional oscillation in the solid crust of a neutron star.

• Research Organization: Department of Physics and Astronomy, Tel Aviv University
• OSTI ID: 6576816
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 258:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DATA ANALYSIS
NEUTRON STARS
OSCILLATION MODES
OSCILLATIONS
PULSARS
SPECTRA
STARS
VARIATIONS
X-RAY SPECTRA