The 3.8 keV feature implies a compactness for 4U 1820-30 that overlaps only marginally with NICER EoS contours if maximum mass is capped at 2.3 solar masses, creating tension with touchdown-flux estimates.
Discovery of Kilohertz Quasi-periodic Oscillations from 4U 1820-303 with Rossi X-Ray Timing Explorer
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
fields
astro-ph.HE 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
The mass of the neutron star in 4U 1820-30 revisited
The 3.8 keV feature implies a compactness for 4U 1820-30 that overlaps only marginally with NICER EoS contours if maximum mass is capped at 2.3 solar masses, creating tension with touchdown-flux estimates.