Results 41 to 50 of about 14,620 (167)
Phase-resolved Deadtime of the Crab Pulsar Using IXPE Data
The Astrophysical JournalAfter receiving an X-ray photon, an X-ray detector is not operational for a duration known as deadtime. It is detector specific and its effect on the data depends upon the luminosity of the source.
M. Vivekanand
doaj +1 more source
Radio Emitting X-ray Binary Stars [PDF]
International Astronomical Union Colloquium, 1996 Some of the most astrophysically interesting objects are found among the radio-emitting X-ray binary stars (REXRB). The class includes the well-studied objects such as SS 433, Cyg X-3 and Sco X-1. The recent discoveries of relativistic ejection of radio knots in the X-ray transients 1915+105 (Mirabel & Rodriguez 1994) and 1655–40 (Hjellming & ...
openaire +1 more source
The Binary X-Ray Stars – the Observational Picture [PDF]
Symposium - International Astronomical Union, 1975 When X-ray sources in the galaxy were discovered in 1962 (Giacconi et al., 1962) it was only possible to speculate on their nature, which centered on supernova and cosmic-ray phenomena since these were the only very energetic events known. In particular, the discovery of an X-ray source associated with the Crab Nebula led to the idea that the emission ...
Herbert Gursky, Ethan Schreier
openaire +1 more source
The Astrophysical Journal, 2023 We present temporal and time-resolved spectral analyses of all the thermonuclear X-ray bursts observed from the neutron star low-mass X-ray binary 4U 1728−34 with NICER from 2017 June to 2019 September.
Z. Funda Bostancı +14 more
doaj +1 more source
T-ReX: The Tarantula—Revealed by X-Rays
The Astrophysical Journal Supplement SeriesThe Tarantula Nebula (30 Doradus, 30 Dor) is the most important star-forming complex in the Local Group, offering a microscope on starburst astrophysics.
Leisa K. Townsley +2 more
doaj +1 more source
X-ray counterparts to stellar MeerKAT Galactic-plane compact radio sources
Astronomy & AstrophysicsContext. Radio emission from magnetically active stars arises primarily from non-thermal processes and provides information complementary to their high-energy X-ray emission.
Egbo O. D. +7 more
doaj +1 more source
The Astrophysical JournalWe explore the empirical power-law relationship between X-ray luminosity ( L _X ) and total surface magnetic flux (Φ), established across solar magnetic elements, time- and disk-averaged emission from the Sun, older active stars, and pre-main-sequence ...
Konstantin V. Getman +11 more
doaj +1 more source
Magnetic Activity in X-Ray Stars from eROSITA: Insights from the TESS and LAMOST Surveys
The Astrophysical Journal Supplement SeriesWe have focused on investigating X-ray stars obtained from eROSITA Data Release 1 (eRASS1) and conducting crossmatching with the TESS and LAMOST surveys.
Lulu Xu +10 more
doaj +1 more source
Stellar X-Ray Activity and Habitability Revealed by the ROSAT Sky Survey
The Astrophysical Journal Supplement SeriesUsing the homogeneous X-ray catalog from ROSAT observations, we conducted a comprehensive investigation into stellar X-ray activity–rotation relations for both single and binary stars.
Henggeng Han +5 more
doaj +1 more source
Limits to Extracting Neutron-star Physics Constraints from NICER Pulse Profiles
The Astrophysical JournalModeling energy-dependent X-ray pulse profiles from rotation-powered millisecond pulsars observed with Neutron Star Interior and Composition Explorer (NICER) has emerged as a promising avenue for measuring neutron-star radii and probing the equation of ...
Tolga Güver +3 more
doaj +1 more source