arXiv:2508.21203v1 Announce Type: new Abstract: In this study, we present novel calculations of X-ray polarization from radio-quiet and unobscured active galactic nuclei (AGNs) using the Monte Carlo ...
arXiv:2508.21229v1 Announce Type: new Abstract: We present spectroscopic identification of 43 quasars and 11 candidate obscured quasars in the epoch of reionization (EoR) at $5.71 \le z \le 7.02$, al...
arXiv:2508.21194v1 Announce Type: new Abstract: Context. Central stars of planetary nebulae (CSPNe) are essential for understanding the final evolutionary stages of low- and intermediate-mass stars. ...
arXiv:2508.21116v1 Announce Type: new Abstract: We present a grid of rotating supergiant models from post-main sequence binary merger products, constructed by the MESA stellar evolution code. We focu...
arXiv:2508.21114v1 Announce Type: new Abstract: The presence of massive black holes (BHs) exceeding $10^9\,{\rm M}_{\odot}$ already at redshift $z > 6$ challenges standard models of BH growth. Sup...
arXiv:2508.21233v1 Announce Type: new Abstract: The initial mass and metallicity of stars both have a strong impact on their fate. Stellar axial rotation also has a strong impact on the structure and...
arXiv:2508.21166v1 Announce Type: new Abstract: Photoevaporative models predict that the lower edge of the Neptune desert is sculpted by atmospheric mass loss. However, the stellar high energy fluxes...
arXiv:2508.21175v1 Announce Type: new Abstract: Motivated by the recent baryon acoustic oscillation measurements of DESI DR2 collaboration, this works presents an extended analysis of a cosmological ...
arXiv:2508.21182v1 Announce Type: new Abstract: Spectroscopic redshift errors, including redshift uncertainty and catastrophic failures, can bias cosmological measurements from galaxy redshift survey...
arXiv:2508.21118v1 Announce Type: new Abstract: We have employed deep far-UV observations secured with the Solar Blind Channel of the Advanced Camera for Surveys onboard the Hubble Space Telescope to...