Results 1 to 10 of about 3,851 (308)
Search for intermittent X-ray pulsations from neutron stars in low-mass X-ray binaries [PDF]
Publications of the Astronomical Society of Australia, 2021 AbstractWe present the results of our extensive binary orbital motion corrected pulsation search for 13 low-mass X-ray binaries. These selected sources exhibit burst oscillations in X-rays with frequencies ranging from 45 to 1 122 Hz and have a binary orbital period varying from 2.1 to 18.9 h.
Yunus Emre Bahar +2 more
openaire +5 more sources
X-Ray Polarization Study of the Neutron Star Low-mass X-Ray Binary GX 349+2
The Astrophysical JournalWe report the first X-ray polarimetric results of the neutron star (NS) low-mass X-ray binary Z-source GX 349+2 using the Imaging X-ray Polarimetry Explorer (IXPE). We discovered that the X-ray source was polarized at a polarization degree of PD = 1.1% ±
Unnati Kashyap +5 more
doaj +3 more sources
X-Ray and Radio Polarimetry of the Neutron Star Low-mass X-Ray Binary GX 13+1
The Astrophysical JournalWe report the X-ray and radio polarization study of the neutron star low-mass X-ray binary (LMXB) GX 13+1 using the Imaging X-ray Polarimetry Explorer (IXPE) and Very Large Array.
Unnati Kashyap +5 more
doaj +3 more sources
X-Ray and Radio Polarimetry of the Neutron Star Low-mass X-Ray Binary 4U 1728–34
The Astrophysical JournalWe report the first X-ray and radio polarimetric results of the neutron star (NS) low-mass X-raydis binary atoll-source 4U 1728−34 using the Imaging X-ray Polarimetry Explorer (IXPE) and Australia Telescope Compact Array.
Unnati Kashyap +6 more
doaj +3 more sources
Fast Transitions of X-Ray Variability in the Neutron Star Low-mass X-Ray Binary Cygnus X-2 [PDF]
The Astrophysical JournalWe present a spectral-timing analysis of two NICER observations of the weakly magnetized neutron star low-mass X-ray binary Cygnus X-2. During these observations, we detect a rapid transition from a narrow 50 Hz horizontal-branch oscillation (HBO) to a ...
Liang Zhang +14 more
doaj +4 more sources
Spectral Energy Distributions of Southern Binary X-Ray Sources
The Astrophysical Journal Supplement Series, 2023 The rapid variability of X-ray binaries (XRBs) produces a wide range of X-ray states that are linked to activity across the electromagnetic spectrum. It is particularly challenging to study a sample of sources large enough to include all types in their ...
John M. Dickey +7 more
doaj +1 more source
Low-Mass X-Ray Binaries with Strange Quark Stars [PDF]
Publications of the Astronomical Society of the Pacific, 2013 Strange quark stars (SSs) may originate from accreting neutron stars (NSs) in low-mass X-ray binaries (LMXBs). Assuming that conversion of NS matter to SSs occurs when the core density of accreting NS reaches to the density of quark deconfinement, $\sim 5 ρ_0$, where $ρ_0\sim 2.7\times 10^{14}$g cm$^{-3}$ is nuclear saturation density, we investigate ...
Zhu, Chunhua +3 more
openaire +2 more sources
An Optically Discovered Outburst from XTE J1859+226
The Astrophysical Journal, 2023 Using the Zwicky Transient Facility, in 2021 February we identified the first known outburst of the black hole X-ray transient XTE J1859+226 since its discovery in 1999. The outburst was visible at X-ray, UV, and optical wavelengths for less than 20 days,
Eric C. Bellm +15 more
doaj +1 more source
The secondary stars in cataclysmic variables and low-mass X-ray binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 We critically re-examine the available data on the spectral types, masses and radii of the secondary stars in cataclysmic variables (CVs) and low-mass X-ray binaries (LMXBs), using the new catalogue of Ritter & Kolb (1998) as a starting point. We find there are 55 reliable spectral type determinations and only 14 reliable mass determinations of CV ...
Smith, D.A., Dhillon, V.S.
openaire +4 more sources
The Astrophysical Journal, 2023 The launch of the Imaging X-ray Polarimetry Explorer (IXPE) on 2021 December 9 has opened a new window in X-ray astronomy. We report here the results of the first IXPE observation of a weakly magnetized neutron star, GS 1826−238, performed on 2022 March ...
Fiamma Capitanio +96 more
doaj +1 more source