XMM-Newton Large Programme Details



PROPOSAL OVERVIEW
Proposal Title Determining the Nature of the Extreme Off-States in ULX Pulsars with NGC5907 ULX
Proposal Category White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, ULXs and Black Holes
Proposal Type UNDEFINED
Proposal Id 082432
Number of Observations 1
Total exposure time (ks) 378

PI DETAILS
PI Dr Dominc Walton
Institute Institute of Astronomy
Country UNITED KINGDOM

CO-INVESTIGATORS
Name Country
F. Fuerst SPAIN
F. Harrson UNITED STATES
A. Belfiore ITALY
G. Israel ITALY
M. Bachetti ITALY
M. Heida UNITED STATES
M. Brightman UNITED STATES
G. Rodriguez ITALY
N. Webb FRANCE
A. Fabian UNITED KINGDOM
R. Salvaterra ITALY
D. Barret FRANCE
M. Middleton UNITED KINGDOM
A. Ptak UNITED STATES
V. Rana UNITED STATES
A. De Luca ITALY

ABSTRACT
We now know that some of the most luminous members of the ultraluminous X-ray source (ULX) population are actually powered by highly super-Eddington pulsars, making them the most extreme accretors known. Three such systems are now known: M82 X-2, NGC 7793 P13, and NGC 5907 ULX. These sources all exhibit unusual `off'-states in which their X-ray flux drops by ~2 orders of magnitude (or more). These off-states are fairly rare, but recent monitoring with Swift shows that NGC 5907 ULX is now entering one. Here we propose an ambitious series of six 60 ks observations of NGC 5907 ULX (360 ks in total) designed to determine the nature of these events. This is of critical importance, as these off-states may offer a means to determine the magnetic fields of these systems.

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. " Probing the nature of the low state in the extreme ultraluminous X-ray pulsar NGC 5907 ULX1 "
    Fuerst, F.; Walton, D. J.; Israel, G. L.; Bachetti, M.; Barret, D.; Brightman, M.; Earnshaw, H. P.; Fabian, A.; Heida, M.; Imbrogno, M.; Middleton, M. J.; Pinto, C.; Salvaterra, R.; Roberts, T. P.; Rodriguez Castillo, G. A.; Webb, N.;
    2023 - Astronomy & Astrophysics, Volume 672, id.A140, pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2023A&A...672A.140F
    DOI: 10.48550/arXiv.2302.01358

  2. " The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions "
    Pan, Zeyang; Qu, Zhijie; Bregman, Joel N.; Liu, Jifeng;
    2024 - The Astrophysical Journal Supplement Series, Volume 271, Issue 2, id.62, 18 pp.
    Number of Citations: 1
    https://ui.adsabs.harvard.edu/search/q=bibcode:2024ApJS..271...62P
    DOI: 10.1093/mnras/stad3885

  3. " The Orbit of NGC 5907 ULX-1 "
    Belfiore, Andrea; Salvaterra, Ruben; Sidoli, Lara; Israel, Gian Luca; Stella, Luigi; De Luca, Andrea; Mereghetti, Sandro; Esposito, Paolo; Pintore, Fabio; D'Ai, Antonino; Rodriguez Castillo, Guillermo; Walton, Dominic J.; Fuerst, Felix; Magistrali, Danilo; Wolter, Anna; Imbrogno, Matteo;
    2024 - The Astrophysical Journal, Volume 965, Issue 1, id.78, 8 pp.
    Number of Citations: 0
    https://ui.adsabs.harvard.edu/search/q=bibcode:2024ApJ...965...78B
    DOI: 10.48550/arXiv.2403.13305

  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