[HTML][HTML] X-ray Polarimetry of X-ray Pulsars

J Poutanen, SS Tsygankov, SV Forsblom - Galaxies, 2024 - mdpi.com
Radiation from X-ray pulsars (XRPs) was expected to be strongly linearly polarized owing to
a large difference in their ordinary and extraordinary mode opacities. The launch of IXPE …

Complex variations in X-ray polarization in the X-ray pulsar LS V+ 44 17/RX J0440. 9+ 4431

V Doroshenko, J Poutanen, J Heyl… - Astronomy & …, 2023 - aanda.org
We report on Imaging X-ray polarimetry explorer (IXPE) observations of the Be-transient X-
ray pulsar LS V+ 44 17/RX J0440. 9+ 4431 made at two luminosity levels during the giant …

X-ray pulsar GRO J1008− 57 as an orthogonal rotator

SS Tsygankov, V Doroshenko, AA Mushtukov… - Astronomy & …, 2023 - aanda.org
X-ray polarimetry is a unique way to probe the geometrical configuration of highly
magnetized accreting neutron stars (X-ray pulsars). GRO J1008− 57 is the first transient X …

Discovery of a strong rotation of the X-ray polarization angle in the galactic burster GX 13+ 1

A Bobrikova, SV Forsblom, A Di Marco… - Astronomy & …, 2024 - aanda.org
Weakly magnetized neutron stars in X-ray binaries show a complex phenomenology with
several spectral components that can be associated with the accretion disk, the boundary …

X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator?

AA Mushtukov, SS Tsygankov… - Monthly Notices of …, 2023 - academic.oup.com
ABSTRACT X Persei is a persistent low-luminosity X-ray pulsar of period of≈ 835 s in a Be
binary system. The field strength at the neutron star surface is not known precisely, but …

X-ray polarimetry of the accreting pulsar GX 301− 2

VF Suleimanov, SV Forsblom, SS Tsygankov… - Astronomy & …, 2023 - aanda.org
The phase-and energy-resolved polarization measurements of accreting X-ray pulsars
(XRPs) allow us to test different theoretical models of their emission, and they also provide …

Studying geometry of the ultraluminous X-ray pulsar Swift J0243. 6+ 6124 using X-ray and optical polarimetry

J Poutanen, SS Tsygankov, V Doroshenko… - Astronomy & …, 2024 - aanda.org
Discovery of pulsations from a number of ultra-luminous X-ray (ULX) sources proved that
accretion onto neutron stars can produce luminosities exceeding the Eddington limit by …

A polarimetrically oriented X-ray stare at the accreting pulsar EXO 2030+ 375

C Malacaria, J Heyl, V Doroshenko… - Astronomy & …, 2023 - aanda.org
Accreting X-ray pulsars (XRPs) are presumed to be ideal targets for polarization
measurements, as their high magnetic field strength is expected to polarize the emission up …

IXPE observations of the quintessential wind-accreting X-ray pulsar Vela X-1

SV Forsblom, J Poutanen, SS Tsygankov… - The Astrophysical …, 2023 - iopscience.iop.org
The radiation from accreting X-ray pulsars was expected to be highly polarized, with some
estimates for the polarization degree of up to 80%. However, phase-resolved and energy …

IXPE and XMM-Newton observations of the Soft Gamma Repeater SGR 1806–20

R Turolla, R Taverna, GL Israel, F Muleri… - The Astrophysical …, 2023 - iopscience.iop.org
Recent observations with the Imaging X-ray Polarimetry Explorer (IXPE) of two anomalous X-
ray pulsars provided evidence that X-ray emission from magnetar sources is strongly …