81 citations · 413 across the 31 of their papers we have counts for
32 papers
High-Energy Neutrino Constraints on memory burdened Bardeen and Kerr Primordial Black Holes
Md Riajul Haque, Suvashis Maity
The quantum memory burden effect can suppress the late-time Hawking evaporation of primordial black holes (PBHs), allowing PBHs below the standard evaporation threshold of approxim…
Precision Analysis for Using Upcoming Multi-band Gravitational Wave Observations
Setabuddin, Md Riajul Haque, Ratna Koley +1
We investigate how multi-band gravitational wave (GW) observations can constrain the uncertainties in the Hubble parameter () using primordial black holes (PBHs) as possible s…
Signal-Aware Contrastive Latent Spaces for Anomaly Detection
Runze Li, Benjamin Nachman, Dennis Noll
High-dimensional feature spaces in particle physics events pose a fundamental challenge to density-estimation-based weakly supervised anomaly detection, whose fidelity degrades rap…
Illuminating the dark universe in the multi-messenger era
Philippe Brax, Anne-Christine Davis, Md Riajul Haque +8
The precision era of multi-messenger astronomy, together with modern astrophysical, cosmological, and gravitational wave observations, increasingly points toward the existence of a…
Prospects of Indirect Detection of Dark Matter via Primordial Black Hole Induced Gravitational Waves
Debarun Paul, Md Riajul Haque, Supratik Pal
Primordial black holes (PBHs), produced in the early Universe, can source a stochastic background of induced gravitational waves (GWs) and provide a non-thermal origin for dark mat…
When Primordial Black Holes Absorb During the Early Universe
Md Riajul Haque, Rajesh Karmakar, Yann Mambrini
We study the evolution of primordial black holes (PBHs) formed in the early universe in the presence of a surrounding thermal bath. By incorporating the effects of thermal absorpti…
Axion-Photon Conversion in FLRW with Primordial Magnetic Fields: Explaining the Radio Excess
Setabuddin, Md Riajul Haque, Rajesh Karmakar +1
We explore the possibility of axion-photon conversion as a common origin of two low-frequency anomalies: the isotropic radio excess (ARCADE2) and the deep global 21-cm absorption t…
Burdening (or not) gravitational waves in the presence of primordial black holes
Mathieu Gross, Md Riajul Haque, Yann Mambrini
We present the spectrum of primordial gravitational wave (GW) expected from the presence of primordial black holes (PBH) and inflaton in the early Universe. For the first time, we…
Minimal Plateau Inflation in light of ACT DR6 Observations
Md Riajul Haque, Debaprasad maity
We explore a class of minimal plateau inflationary models constrained by the latest cosmological observations from ACT DR6, Planck 2018, BICEP/Keck 2018, and DESI, collectively ref…
Impact of general relativistic accretion on primordial black holes
Santabrata Das, Md Riajul Haque, Jitumani Kalita +2
We demonstrate that general relativistic corrections to the accretion of relativistic matter onto primordial black holes (PBHs) can significantly enhance their mass growth during t…
Improved Predictions on Higgs-Starobinsky Inflation and Reheating with ACT DR6 and Primordial Gravitational Waves
Md Riajul Haque, Sourav Pal, Debarun Paul
We investigate the implications of recent CMB observations for Higgs-Starobinsky inflationary models and their associated reheating dynamics, utilizing data from ACT DR6, Planck 20…
ACT DR6 Insights on the Inflationary Attractor models and Reheating
Md Riajul Haque, Sourav Pal, Debarun Paul
We investigate the observational constraints on -attractor inflationary models and their post-inflationary reheating dynamics in light of the latest CMB data from ACT DR6 combin…
Generalizing the Bogoliubov vs Boltzmann approaches in gravitational production
Ayan Chakraborty, Simon Clery, Md Riajul Haque +2
We investigate the spectral behavior of scalar fluctuations generated by gravity during inflation and the subsequent reheating phase. We consider a non-perturbative Bogoliubov trea…
Gravitational Wave Signatures of Primordial Black Hole Reheating in Upcoming Interferometry Missions
Debarun Paul, Md Riajul Haque, Supratik Pal
We investigate the prospects of detecting a stochastic gravitational wave (GW) background from the primordial black hole (PBH) reheating epoch. If PBHs form during a non-standard c…
Is leptogenesis during gravitational reheating flavourful?
Basabendu Barman, Arghyajit Datta, Md Riajul Haque
We examine the impact of charged lepton Yukawa equilibration on leptogenesis during gravitational reheating. During the post-inflationary era, the inflaton field is assumed to osci…
Memory burden effect mimics reheating signatures on SGWB from ultra-low mass PBH domination
Nilanjandev Bhaumik, Md Riajul Haque, Rajeev Kumar Jain +1
Ultra-low mass primordial black holes (PBH), briefly dominating the expansion of the universe, would leave detectable imprints in the secondary stochastic gravitational wave backgr…
Thermal and nonthermal dark matters with gravitational neutrino reheating
Md Riajul Haque, Debaprasad Maity, Rajesh Mondal
We have discussed in detail how neutrinos produced from inflaton solely through gravitational interaction can successfully reheat the universe. For this, we have introduced the wel…
Probing the early universe with future GW observatories
Suvashis Maity, Md Riajul Haque
One of the fundamental characteristics of slow roll inflation is its generation of tensor perturbations, which manifest as stochastic gravitational waves (GWs). Slow roll inflation…
Gravitational wave signatures of cogenesis from a burdened PBH
Basabendu Barman, Md Riajul Haque, Óscar Zapata
We explore the possibility of explaining the observed dark matter (DM) relic abundance, along with matter-antimatter asymmetry, entirely from the evaporation of primordial black ho…
Quantum effects on the evaporation of PBHs: contributions to dark matter
Md Riajul Haque, Suvashis Maity, Debaprasad Maity +1
We compute the relic abundance of dark matter in the presence of Primordial Black Holes (PBHs) beyond the semiclassical approximation. We take into account the quantum corrections…
Constraining the history of reheating with the NANOGrav 15-year data
Suvashis Maity, Nilanjandev Bhaumik, Md Riajul Haque +2
Over the last few years, primordial black holes (PBHs) have emerged as a strong candidate for cold dark matter. A significant number of PBHs are produced when the strength of the p…
Leptogenesis, primordial gravitational waves, and PBH-induced reheating
Basabendu Barman, Suruj Jyoti Das, Md Riajul Haque +1
We explore the possibility of producing the observed matter-antimatter asymmetry of the Universe uniquely from the evaporation of primordial black holes (PBH) that are formed in an…
Gravitational neutrino reheating
Md Riajul Haque, Debaprasad Maity, Rajesh Mondal
Despite having important cosmological implications, the reheating phase is believed to play a crucial role in cosmology and particle physics model building. Conventionally, the mod…
Primordial black hole versus inflaton
Md Riajul Haque, Essodjolo Kpatcha, Debaprasad Maity +1
We compare the dark matter(DM) production processes and its parameters space in the background of reheating obtained from two chief systems in the early Universe: the inflaton …