Phase-coherent timing of PSR J1811-1925

The pulsar at the heart of G11.2-0.3

F. P. Gavriil, V. M. Kaspi, Mallory Roberts

    Research output: Contribution to journalArticle

    Abstract

    The X-ray Pulsar PSR J1811-1925 in the historic supernova remnant G11.2-0.3 has a characteristic age over 10 times the age of the remnant. This likely implies that its current spin period, 65 ms, is close to its birth spin period. Alternatively, the pulsar may have an unusually high braking index. We report here on regular Rossi X-ray Timing Explorer/Proportional Counting Array (RXTE/PCA) timing observations of the pulsar that were designed to measure its braking index. We provide a preliminary phase-coherent timing solution which includes a significant ν̈. The braking index we measure is ≫3, likely a result of conventional timing noise. We also report on a preliminary analysis of the pulsar's hard spectrum: we determine a photon index of Γ = 1.78 ± 0.74, for the pulsed component of the spectrum, consistent within the uncertainties with previous ASCA and Chandra observations. The pulsed emission of PSR J1811-1925 is seen beyond 30 keV, and the pulsations remain sinusoidal up to and beyond this energy.

    Original languageEnglish (US)
    Pages (from-to)592-596
    Number of pages5
    JournalAdvances in Space Research
    Volume33
    Issue number4
    DOIs
    StatePublished - Apr 22 2004

    Fingerprint

    pulsars
    braking
    Braking
    time measurement
    X rays
    X Ray Timing Explorer
    supernova remnants
    counting
    Photons
    Pulsars
    index
    photons
    energy
    x rays

    Keywords

    • G11.2-0.3
    • Phase-coherent timing
    • PSR J1811-1925
    • Pulsar

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Phase-coherent timing of PSR J1811-1925 : The pulsar at the heart of G11.2-0.3. / Gavriil, F. P.; Kaspi, V. M.; Roberts, Mallory.

    In: Advances in Space Research, Vol. 33, No. 4, 22.04.2004, p. 592-596.

    Research output: Contribution to journalArticle

    Gavriil, F. P. ; Kaspi, V. M. ; Roberts, Mallory. / Phase-coherent timing of PSR J1811-1925 : The pulsar at the heart of G11.2-0.3. In: Advances in Space Research. 2004 ; Vol. 33, No. 4. pp. 592-596.
    @article{12dde1f403bb4c0d8aa6937e03ffe9ff,
    title = "Phase-coherent timing of PSR J1811-1925: The pulsar at the heart of G11.2-0.3",
    abstract = "The X-ray Pulsar PSR J1811-1925 in the historic supernova remnant G11.2-0.3 has a characteristic age over 10 times the age of the remnant. This likely implies that its current spin period, 65 ms, is close to its birth spin period. Alternatively, the pulsar may have an unusually high braking index. We report here on regular Rossi X-ray Timing Explorer/Proportional Counting Array (RXTE/PCA) timing observations of the pulsar that were designed to measure its braking index. We provide a preliminary phase-coherent timing solution which includes a significant ν̈. The braking index we measure is ≫3, likely a result of conventional timing noise. We also report on a preliminary analysis of the pulsar's hard spectrum: we determine a photon index of Γ = 1.78 ± 0.74, for the pulsed component of the spectrum, consistent within the uncertainties with previous ASCA and Chandra observations. The pulsed emission of PSR J1811-1925 is seen beyond 30 keV, and the pulsations remain sinusoidal up to and beyond this energy.",
    keywords = "G11.2-0.3, Phase-coherent timing, PSR J1811-1925, Pulsar",
    author = "Gavriil, {F. P.} and Kaspi, {V. M.} and Mallory Roberts",
    year = "2004",
    month = "4",
    day = "22",
    doi = "10.1016/j.asr.2003.07.028",
    language = "English (US)",
    volume = "33",
    pages = "592--596",
    journal = "Advances in Space Research",
    issn = "0273-1177",
    publisher = "Elsevier Limited",
    number = "4",

    }

    TY - JOUR

    T1 - Phase-coherent timing of PSR J1811-1925

    T2 - The pulsar at the heart of G11.2-0.3

    AU - Gavriil, F. P.

    AU - Kaspi, V. M.

    AU - Roberts, Mallory

    PY - 2004/4/22

    Y1 - 2004/4/22

    N2 - The X-ray Pulsar PSR J1811-1925 in the historic supernova remnant G11.2-0.3 has a characteristic age over 10 times the age of the remnant. This likely implies that its current spin period, 65 ms, is close to its birth spin period. Alternatively, the pulsar may have an unusually high braking index. We report here on regular Rossi X-ray Timing Explorer/Proportional Counting Array (RXTE/PCA) timing observations of the pulsar that were designed to measure its braking index. We provide a preliminary phase-coherent timing solution which includes a significant ν̈. The braking index we measure is ≫3, likely a result of conventional timing noise. We also report on a preliminary analysis of the pulsar's hard spectrum: we determine a photon index of Γ = 1.78 ± 0.74, for the pulsed component of the spectrum, consistent within the uncertainties with previous ASCA and Chandra observations. The pulsed emission of PSR J1811-1925 is seen beyond 30 keV, and the pulsations remain sinusoidal up to and beyond this energy.

    AB - The X-ray Pulsar PSR J1811-1925 in the historic supernova remnant G11.2-0.3 has a characteristic age over 10 times the age of the remnant. This likely implies that its current spin period, 65 ms, is close to its birth spin period. Alternatively, the pulsar may have an unusually high braking index. We report here on regular Rossi X-ray Timing Explorer/Proportional Counting Array (RXTE/PCA) timing observations of the pulsar that were designed to measure its braking index. We provide a preliminary phase-coherent timing solution which includes a significant ν̈. The braking index we measure is ≫3, likely a result of conventional timing noise. We also report on a preliminary analysis of the pulsar's hard spectrum: we determine a photon index of Γ = 1.78 ± 0.74, for the pulsed component of the spectrum, consistent within the uncertainties with previous ASCA and Chandra observations. The pulsed emission of PSR J1811-1925 is seen beyond 30 keV, and the pulsations remain sinusoidal up to and beyond this energy.

    KW - G11.2-0.3

    KW - Phase-coherent timing

    KW - PSR J1811-1925

    KW - Pulsar

    UR - http://www.scopus.com/inward/record.url?scp=1842741151&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=1842741151&partnerID=8YFLogxK

    U2 - 10.1016/j.asr.2003.07.028

    DO - 10.1016/j.asr.2003.07.028

    M3 - Article

    VL - 33

    SP - 592

    EP - 596

    JO - Advances in Space Research

    JF - Advances in Space Research

    SN - 0273-1177

    IS - 4

    ER -