209 citations · 725 across the 89 of their papers we have counts for
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Variable polarisation and Doppler tomography of PSR J1023+0038 - Evidence for the magnetic propeller during flaring?
Pasi Hakala, Jari J. E. Kajava
Transitional millisecond pulsars are systems that alternate between an accreting low-mass X-ray binary (LMXB) state, and a non-accreting radio pulsar state. When at the LMXB state,…
Neutron star mass and radius measurements from atmospheric model fits to X-ray burst cooling tail spectra
J. Nättilä, M. C. Miller, A. W. Steiner +3
Observations of thermonuclear X-ray bursts from accreting neutron stars (NSs) in low-mass X-ray binary systems can be used to constrain NS masses and radii. Most previous work of t…
Long-term optical and X-ray variability of the Be/X-ray binary H 1145-619: discovery of an on-going retrograde density wave
J. Alfonso-Garzón, J. Fabregat, P. Reig +7
Multiwavelength monitoring of Be/X-ray binaries is crucial to understand the mechanisms producing their outbursts. H 1145-619 is one of these systems, which has recently displayed…
Basic parameters of the helium accreting X-ray bursting neutron star in 4U 1820-30
Valery F. Suleimanov, Jari J. E. Kajava, Sergey V. Molkov +4
The ultracompact low-mass X-ray binary 4U 1820-30 situated in the globular cluster NGC 6624 has an orbital period of only 11.4 min which likely implies a white dwarf compa…
Studying the accretion geometry of EXO 2030+375 at luminosities close to the propeller regime
F. Fuerst, P. Kretschmar, J. J. E. Kajava +10
The Be X-ray binary EXO 2030+375 was in an extended low luminosity state during most of 2016. We observed this state with NuSTAR and Swift, supported by INTEGRAL observations as we…
Variable spreading layer in 4U 1608-52 during thermonuclear X-ray bursts in the soft state
J. J. E. Kajava, K. I. I. Koljonen, J. Nättilä +2
Thermonuclear (type-I) X-ray bursts, observed from neutron star (NS) low-mass X-ray binaries (LMXB), provide constraints on NS masses and radii and consequently the equation of sta…