XMM-Newton Large Programme Details



PROPOSAL OVERVIEW
Proposal Title Investigating the vertical structure of the accretion disc wind in Hercules X-1
Proposal Category White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, ULXs and Black Holes
Proposal Type LARGE PROGRAM
Proposal Id 86544
Number of Observations 3
Total exposure time (ks) 405

PI DETAILS
PI Mr Peter Kosec
Institute Institute of Astronomy
Country UNITED KINGDOM

CO-INVESTIGATORS
Name Country
A. Fabian UNITED KINGDOM
D. Walton UNITED KINGDOM
C. Pinto NETHERLANDS
F. Fuerst SPAIN
R. Ballhausen GERMANY
S. Dyda UNITED KINGDOM
I. Psaradaki NETHERLANDS
J. Wilms GERMANY
C. Reynolds UNITED KINGDOM

ABSTRACT
Accretion disc winds in X-ray binaries are not spherically symmetric structures, but their solid angle is difficult to determine because we usually only sample specific lines of sight. We can overcome this problem by studying Hercules X-1, a binary with a precessing warped disc. Its disc wind is strongly varying within a precession cycle, indicating a small wind launching angle and strong vertical stratification. However, the available data originate from many precession cycles and could be plagued by long-term variability effects. With this proposal, we aim to finely sample the wind vertical structure within a single precession cycle, free of any long term deviations, to understand the wind launching angle, launching mechanism and to measure accurately the mass outflow rate.

PAPERS
Authors marked in red are (co-)investigators in the proposal

Classification of papers are:
- CLASS 1:   papers that present specific XMM-Newton observations
- CLASS 2: papers that refer to published XMM-Newton results with complementary observations, follow-up analysis, or theoretical analysis
- CLASS 3: further deliveries which resulted from the program and which are made available to the community (e.g. source catalogues, processed images or spectra in public data base)
- CLASS 4: comments and suggestions from PI

CLASS 1 (4 references)
  1. " The Long Stare at Hercules X-1. I. Emission Lines from the Outer Disk, the Magnetosphere Boundary, and the Accretion Curtain "
    Kosec, P.; Kara, E.; Fabian, A. C.; Fuerst, F.; Pinto, C.; Psaradaki, I.; Reynolds, C. S.; Rogantini, D.; Walton, D. J.; Ballhausen, R.; Canizares, C.; Dyda, S.; Staubert, R.; Wilms, J.;
    2022 - The Astrophysical Journal, Volume 936, Issue 2, id.185, pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2022ApJ...936..185K
    DOI: 10.3847/1538-4357/ac897e

  2. " Vertical wind structure in an X-ray binary revealed by a precessing accretion disk "
    Kosec, P.; Kara, E.; Fabian, A. C.; Fuerst, F.; Pinto, C.; Psaradaki, I.; Reynolds, C. S.; Rogantini, D.; Walton, D. J.; Ballhausen, R.; Canizares, C.; Dyda, S.; Staubert, R.; Wilms, J.;
    2023 - Nature Astronomy, Volume 7, p. 715-723
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2023NatAs...7..715K
    DOI: 10.48550/arXiv.2212.01104

  3. " Constraining the Number Density of the Accretion Disk Wind in Hercules X-1 Using Its Ionization Response to X-Ray Pulsations "
    Kosec, P.; Rogantini, D.; Kara, E.; Canizares, C. R.; Fabian, A. C.; Pinto, C.; Psaradaki, I.; Staubert, R.; Walton, D. J.;
    2024 - The Astrophysical Journal, Volume 972, Issue 1, id.32, 18 pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2024ApJ...972...32K
    DOI: 10.3847/1538-4357/ad5b5a

  4. " Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE "
    Ma, Xiangyao; Zhang, Yanxia; Zhang, Jingyi; Li, Changhua; Kang, Zihan; Li, Ji;
    2024 - The Astronomical Journal, Volume 168, Issue 5, id.210, 10 pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2024AJ....168..210M
    DOI: 10.3847/1538-4357/ad6e81