Homi Bhabha Road

Jan 7, 2025 | academic.oup.com | Homi Bhabha Road

PDF Split View Tomáš Šoltinský, Girish Kulkarni, Shriharsh P Tendulkar, James S Bolton, Prospects of a statistical detection of the 21-cm forest and its potential to constrain the thermal state of the neutral IGM during reionization, Monthly Notices of the Royal Astronomical Society, 2025;, staf026, https://doi.org/10.1093/mnras/staf026 Close methods: numerical, dark ages, reionization, first stars, intergalactic medium, quasars: absorption lines Accepted manuscripts are PDF versions of the...

Sep 11, 2024 | academic.oup.com | Homi Bhabha Road

Many theories of the early Universe predict that the statistical distribution of primordial potential perturbations is close to Gaussian, but with small deviations (see e.g. Chen 2010; Achúcarro et al. 2022; Meerburg et al. 2019, for recent reviews). The structure of these deviations, known as primordial non-Gaussianity (PNG), encodes the details of the physical processes governing the evolution of the Universe at that epoch.

Mar 15, 2024 | academic.oup.com | Homi Bhabha Road

The patchiness in the reionization process alters the statistics of Cosmic Microwave Background (CMB), with the kinematic Sunyaev-Zel’dovich (kSZ) effect in the CMB temperature power spectrum being a notable consequence. In this work, we aim to explore the potential of future kSZ power spectrum measurements in inferring the details of the reionization process.

Feb 16, 2024 | academic.oup.com | Homi Bhabha Road

The discovery of gravitational waves (GWs) by the Laser Interferometer Gravitational-Wave Observatory (LIGO) - Virgo Gravitational Wave Interferometer (Virgo) - Kamioka Gravitational Wave Detector (KAGRA) Collaboration from coalescing compact object binaries of a few tens of solar masses inaugurated the era of GW astronomy, enabling the observations of previously inaccessible astrophysical phenomena (Acernese et al. 2014,2019; Aasi et al. 2015; Abbott et al. 2016a, 2018; Akutsu et al. 2019, 2021).

Dec 18, 2023 | link.aps.org | Anish Acharya |Homi Bhabha Road |Shamik Gupta

We investigate the dynamics of a quantum system subjected to a time-dependent and conditional resetting protocol. Namely, we ask what happens when the unitary evolution of the system is repeatedly interrupted at random time instants with an instantaneous reset to a specified set of reset configurations taking place with a probability that depends on the current configuration of the system at the instant of reset?