HD49798/RXJ0648-4418 is an X-ray binary with unique properties: the primary staris the brightest known subdwarf of early spectral type, while the secondary isthe fastest rotating (P=13.2 s) and one of the most massive (M>1.2 Msun) whitedwarfs currently known. We propose a follow-up study to better understand theproperties of the X-ray emission and derive tighter constraints on the masses ofthis interesting post-common envelope binary. In addition, observations near thetime of the eclipse will provide for the first time information on the stellarwind properties of a hot subdwarf.
Publications
X-ray emission from the luminous O-type subdwarf HD 49798 and its compact companion |Mereghetti, S., La Palombara, N., et al. | A&A | 553-46 | 2013 | 2013A&A...553A..46M | http://ui.adsabs.harvard.edu/#abs/2013A&A...553A..46M
Discovery of spin-up in the X-ray pulsar companion of the hot subdwarf HD 49798 |Mereghetti, Sandro, Pintore, Fabio, et al. | MNRAS | 458-3523 | 2016 | 2016MNRAS.458.3523M | http://ui.adsabs.harvard.edu/#abs/2016MNRAS.458.3523M
Hot subdwarf wind models with accurate abundances. I. Hydrogen dominated stars HD 49798 and BD+18\\u00b0 2647 |Krti\\u010dka, J., Jan\\u00edk, J., et al. | A&A | 631-75 | 2019 | 2019A&A...631A..75K | http://ui.adsabs.harvard.edu/#abs/2019A&A...631A..75K
New X-ray observations of the hot subdwarf binary HD 49798/RX J0648.0-4418 |Mereghetti, S., Pintore, F., et al. | MNRAS | 504-920 | 2021 | 2021MNRAS.504..920M | http://ui.adsabs.harvard.edu/#abs/2021MNRAS.504..920M
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, et al. | ApJS | 271-62 | 2024 | 2024ApJS..271...62P | http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P
Robust constraints on feebly interacting particles using XMM-Newton |Luque, Pedro De la Torre, Balaji, Shyam, | PhRvD | 109-L101305 | 2024 | 2024PhRvD.109j1305L | http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L
Multimessenger search for electrophilic feebly interacting particles from supernovae |Luque, Pedro De la Torre, Balaji, Shyam, | PhRvD | 109-103028 | 2024 | 2024PhRvD.109j3028L | http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L
Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints |De la Torre Luque, Pedro, Balaji, Shyam, | ApJ | 968-46 | 2024 | 2024ApJ...968...46D | http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2011-05-02T13:10:57Z/2011-09-08T04:36:28Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Dr SANDRO MEREGHETTI, 2012, 'The fast-spinning ultra-massive white dwarf companion of HD 49798', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-8f8edsj
