Browsing by Subject "Magnetic fields"

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  • Chandra X-ray study confirms that the magnetic standard Ap star KQ Vel hosts a neutron star companion 
    Oskinova L.M.; Ignace R.; Leto P.; Postnov K.A. (2020)
    © ESO 2020. Context. KQ Vel is a peculiar A0p star with a strong surface magnetic field of about 7.5 kG. It has a slow rotational period of nearly 8 years. Bailey et al. (A&A, 575, A115) detected a binary companion of ...
  • Dynamo generated magnetic configurations in accretion discs and the nature of quasi-periodic oscillations in accreting binary systems 
    Moss D.; Sokoloff D.; Suleimanov V. (2016)
    © ESO 2016.Context. Magnetic fields are important for accretion disc structure. Magnetic fields in a disc system may be transported with the accreted matter. They can be associated with either the central body and/or jet, ...
  • Evidence for the radiation-pressure dominated accretion disk in bursting pulsar GRO J1744-28 using timing analysis 
    Mönkkönen J.; Tsygankov S.; Mushtukov A.; Doroshenko V.; Suleimanov V.; Poutanen J. (2019)
    © ESO 2019. The X-ray pulsar GRO J1744-28 is a unique source that shows both pulsations and type-II X-ray bursts, allowing studies of the interaction of the accretion disk with the magnetosphere at huge mass-accretion rates ...
  • Observations of GRO J1744-28 in quiescence with XMM-Newton 
    Doroshenko V.; Suleimanov V.; Tsygankov S.; Mönkkönen J.; Ji L.; Santangelo A. (2020)
    © ESO 2020. We report on the deep observations of the "bursting pulsar"GRO J1744-28, which were performed with XMM-Newton and aimed to clarify the origin of its X-ray emission in quiescence. We detect the source at a ...
  • Planck 2015 results: XIX. Constraints on primordial magnetic fields 
    Ade P.; Aghanim N.; Arnaud M.; Arroja F.; Ashdown M.; Aumont J.; Baccigalupi C.; Ballardini M.; Banday A.; Barreiro R.; Bartolo N.; Battaner E.; Benabed K.; Benoît A.; Benoit-Lévy A.; Bernard J.; Bersanelli M.; Bielewicz P.; Bock J.; Bonaldi A.; Bonavera L.; Bond J.; Borrill J.; Bouchet F.; Bucher M.; Burigana C.; Butler R.; Calabrese E.; Cardoso J.; Catalano A.; Chamballu A.; Chiang H.; Chluba J.; Christensen P.; Church S.; Clements D.; Colombi S.; Colombo L.; Combet C.; Couchot F.; Coulais A.; Crill B.; Curto A.; Cuttaia F.; Danese L.; Davies R.; Davis R.; De Bernardis P.; De Rosa A.; De Zotti G.; Delabrouille J.; Désert F.; Diego J.; Dolag K.; Dole H.; Donzelli S.; Doré O.; Douspis M.; Ducout A.; Dupac X.; Efstathiou G.; Elsner F. (2016)
    © ESO, 2016.We compute and investigate four types of imprint of a stochastic background of primordial magnetic fields (PMFs) on the cosmic microwave background (CMB) anisotropies: the impact of PMFs on the CMB temperature ...
  • Radiative properties of magnetic neutron stars with metallic surfaces and thin atmospheres 
    Potekhin A.; Suleimanov V.; Van Adelsberg M.; Werner K. (2012)
    Context. Simple models fail to describe the observed spectra of X-ray-dim isolated neutron stars (XDINSs). Interpretating these spectra requires detailed studies of radiative properties in the outermost layers of neutron ...
  • X-ray emission from magnetized neutron star atmospheres at low mass-accretion rates: I. Phase-averaged spectrum 
    Sokolova-Lapa E.; Gornostaev M.; Wilms J.; Ballhausen R.; Falkner S.; Postnov K.; Thalhammer P.; Fürst F.; García J.A.; Shakura N.; Becker P.A.; Wolff M.T.; Pottschmidt K.; Härer L.; Malacaria C. (2021)
    Recent observations of X-ray pulsars at low luminosities allow, for the first time, the comparison of theoretical models of the emission from highly magnetized neutron star atmospheres at low mass-accretion rates (M ≤ 1015 ...

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