3 papers
astro-ph.GA2025
Beyond Extreme Burstiness: Evolving Star Formation Efficiency as the Key to Early Galaxy Abundance
Abhijnan Kar, Shadab Alam, Joseph Silk
JWST observations have revealed an overabundance of bright galaxies at , creating apparent tensions with theoretical predictions within standard CDM cosmology. We add…
astro-ph.HE2025
Long-term evolution of Sco X-1: implications for the current spin frequency and ellipticity of the neutron star
Abhijnan Kar, Pulkit Ojha, Sudip Bhattacharyya
Sco X-1 is the brightest observed extra-solar X-ray source, which is a neutron star (NS) low-mass X-ray binary (LMXB), and is thought to have a strong potential for continuous grav…
astro-ph.HE2024
Long-term evolution of spin and other properties of neutron star low-mass X-ray binaries: implications for millisecond X-ray pulsars
Abhijnan Kar, Pulkit Ojha, Sudip Bhattacharyya
A neutron star (NS) accreting matter from a companion star in a low-mass X-ray binary (LMXB) system can spin up to become a millisecond pulsar (MSP). Properties of many such MSP sy…