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    The MAVERIC Survey: A Transitional Millisecond Pulsar Candidate in Terzan 5

    71482.pdf (3.531Mb)
    Access Status
    Open access
    Authors
    Bahramian, A.
    Strader, J.
    Chomiuk, L.
    Heinke, C.
    Miller-Jones, James
    Degenaar, N.
    Tetarenko, A.
    Tudor, V.
    Tremou, E.
    Shishkovsky, L.
    Wijnands, R.
    Maccarone, T.
    Sivakoff, G.
    Ransom, S.
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Bahramian, A. and Strader, J. and Chomiuk, L. and Heinke, C. and Miller-Jones, J. and Degenaar, N. and Tetarenko, A. et al. 2018. The MAVERIC Survey: A Transitional Millisecond Pulsar Candidate in Terzan 5. Astrophysical Journal. 864 (1): Article ID 28.
    Source Title
    Astrophysical Journal
    DOI
    10.3847/1538-4357/aad68b
    School
    Curtin Institute of Radio Astronomy (Physics)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/FT140101082
    Remarks

    Copyright © 2018 The American Astronomical Society. All rights reserved.

    URI
    http://hdl.handle.net/20.500.11937/71239
    Collection
    • Curtin Research Publications
    Abstract

    Transitional millisecond pulsars are accreting millisecond pulsars that switch between accreting X-ray binary and millisecond radio pulsar states. Only a handful of these objects have been identified so far. Terzan 5 CX1 is a variable hard-X-ray source in the globular cluster Terzan 5. In this paper, we identify a radio counterpart to CX1 in deep Very Large Array radio continuum data. Chandra observations over the last 14 years indicate that CX1 shows two brightness states: in 2003 and 2016 the source was the brightest X-ray source in the cluster (at L X ~ 1033 erg s-1), while in many intermediate observations, its luminosity was almost an order of magnitude lower. We analyze all available X-ray data of CX1, showing that the two states are consistent with the spectral and variability properties observed for the X-ray active and radio pulsar states of known transitional millisecond pulsars. Finally, we discuss the prospects for the detection of CX1 as a radio pulsar in existing timing data.

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