Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Timing Noise in SGR 1806-20.

Woods, Kouveliotou, Finger

    The Astrophysical Journal
    |June 1, 2000
    PubMed
    Summary

    We analyzed Rossi X-Ray Timing Explorer data for SGR 1806-20, finding its spin-down rate varies and exhibits significant timing noise, unlike typical radio pulsars. This suggests magnetars may have unique timing properties.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    On the Presence of Albumen in the Urine.

    Medical examiner (Philadelphia, Pa.)·2023
    Same author

    Letter to the Editor.

    Veterinary dermatology·2021
    Same author

    On Chlorotic Affections.

    The Medical and physical journal·2018
    Same author

    Messrs. Scott and Taynton, on Vaccination.

    The Medical and physical journal·2018
    Same author

    Case in Which the Beneficial Effects of Friction, as Recommended by Mr Grosvenor of Oxford, Were Strongly Exemplified.

    Edinburgh medical and surgical journal·2018
    Same author

    Account of the Effects Produced on the Human Body by the Internal Use of the Nitrous Acid, and of the Benefit Derived from It in the Cure of Diseases.

    Annals of medicine, for the year ... : exhibiting a concise view of the latest and most important discoveries in medicine and medical philosophy·2018

    Area of Science:

    • High-energy astrophysics
    • Compact object physics
    • Pulsar astronomy

    Background:

    • Magnetars, a class of neutron stars, are characterized by extremely strong magnetic fields.
    • Understanding their rotational behavior and emission mechanisms is crucial for stellar evolution models.

    Purpose of the Study:

    • To investigate the rotational dynamics and timing behavior of the Soft Gamma Repeater SGR 1806-20.
    • To compare the timing properties of SGR 1806-20 with those of radio pulsars and other magnetar candidates.

    Main Methods:

    • Phase-connected analysis of Rossi X-Ray Timing Explorer Proportional Counter Array observations spanning 178 days.
    • Modeling of spin-down behavior and analysis of phase residuals for periodicity and timing noise.

    Related Experiment Videos

    Main Results:

    • A simple secular spin-down model does not fit the data; the period derivative varies significantly.
    • Phase residuals exhibit timing noise, with magnitudes larger than typically observed in radio pulsars.
    • Magnetar candidates, including SGR 1806-20, show higher timing noise levels than expected from radio pulsar correlations.
    • An orbital model with a 733-day period is statistically acceptable, but companion accretion cannot power the observed emission.

    Conclusions:

    • The rotational behavior of SGR 1806-20 is complex, deviating from simple spin-down models.
    • Magnetars exhibit distinct timing noise characteristics compared to radio pulsars.
    • The observed timing noise in SGR 1806-20 is comparable to some accreting systems, but its spin-down remains coherent over years.