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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…
Radiation from rapidly rotating oblate neutron stars
Joonas Nättilä, Pauli Pihajoki
A theoretical framework for emission originating from rapidly rotating oblate compact objects is described in detail. By using a Hamilton-Jacobi formalism, we show how the special…
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…
Flux decay during thermonuclear X-ray bursts analysed with the dynamic power-law index method
J. Kuuttila, J. J. E. Kajava, J. Nättilä +5
The cooling of type-I X-ray bursts can be used to probe the nuclear burning conditions in neutron star envelopes. The flux decay of the bursts has been traditionally modelled with…