3 papers
astro-ph.CO2025
Prospects for probing dark matter particles and primordial black holes with the Square Kilometre Array using the 21 cm power spectrum at cosmic dawn
Meng-Lin Zhao, Yue Shao, Sai Wang +1
Probing the nature of dark matter (DM) remains an outstanding problem in modern cosmology. The 21 cm signal, as a sensitive tracer of neutral hydrogen during cosmic dawn, provides…
astro-ph.CO2025
Configuration Requirements for 21-cm Forest Background Quasar Searches with the Moon-based Interferometer
Siyuan Zhang, Qi Niu, Yichao Li +1
The 21-cm forest offers a powerful cosmological probe of the thermal history and small-scale structure of the intergalactic medium during the Epoch of Reionization (EoR). Its succe…
astro-ph.CO2019
A new cosmological probe using super-massive black hole shadows
Jing-Zhao Qi, Xin Zhang
We study the prospects of using the low-redshift and high-redshift black hole shadows as new cosmological standard rulers for measuring cosmological parameters. We show that, using…