Ernazar B. Abdikamalov

Parameter estimation horizon of core-collapse supernovae with current and next-generation gravitational-wave detectors

Almat Akhmetali, Y. S. Abylkairov, Daniil Orel, Solange da Silva Nunes et autres

Core-collapse supernovae (CCSNe) are powerful sources of gravitational waves (GWs). These signals propagate essentially unobstructed, providing a unique probe of the supernova central engine. In this work, we investigate parameter estimation from the bounce and early ring-down GW signal of rotating CCSNe …

kz, ae, pt, es (code pays fourni par la source)

Toward more realistic machine-learning inference of the dense-matter equation of state from supernova gravitational waves

Almat Akhmetali, Y. S. Abylkairov, Marat Zaidyn, A. Sakan et autres

Gravitational waves from core-collapse supernovae offer a unique probe of the equation of state (EOS) of dense nuclear matter. For rapidly rotating stars, previous machine-learning studies demonstrated promising EOS classification accuracy. However, these analyses relied on several simplifying assumptions. In this work, …

kz, es (code pays fourni par la source)

Toward More Realistic Machine-Learning Inference of the Dense-Matter Equation of State from Supernova Gravitational Waves

Almat Akhmetali, Y. Sultan Abylkairov, Marat Zaidyn, Aknur Sakan et autres

Gravitational waves from core-collapse supernovae offer a unique probe of the equation of state (EOS) of dense nuclear matter. For rapidly rotating stars, previous machine-learning studies demonstrated promising EOS classification accuracy. However, these analyses relied on several simplifying assumptions. In this work, …

Systematic Study of Forward and Reverse Shock Afterglow Emission from Two-Component Jets

Olzhas Mukazhanov, Ernazar B. Abdikamalov, Paz Beniamini

Two-component jets are frequently invoked to explain complex features in gamma-ray burst (GRB) afterglows, such as late-time rebrightening and chromatic breaks. While many studies fit these models to individual events, a systematic exploration mapping the broader parameter space, particularly the reverse shock …

Systematic Study of Forward and Reverse Shock Afterglow Emission from Two-Component Jets

Olzhas Mukazhanov, Ernazar B. Abdikamalov, Paz Beniamini

Two-component jets are frequently invoked to explain complex features in gamma-ray burst (GRB) afterglows, such as late-time rebrightening and chromatic breaks. While many studies fit these models to individual events, a systematic exploration mapping the broader parameter space, particularly the reverse shock …

kz (code pays fourni par la source)

Evolution of fractality in centrally concentrated young clusters

Almat Akhmetali, Adilkhan Assilkhan, Mordecai-Mark Mac Low, Nurzhan Ussipov et autres

We investigate the structural evolution of young star clusters forming within centrally concentrated molecular clouds. Our simulations use the Torch framework, which integrates the FLASH magnetohydrodynamics code with the AMUSE environment, enabling a self-consistent treatment of gas dynamics, star formation, stellar evolution, …

Centrally concentrated star formation in young clusters

Mordecai‐Mark Mac Low, Brooke Polak, Ernazar B. Abdikamalov, Claude Cournoyer-Cloutier et autres

The study of star cluster evolution necessitates modeling how their density profiles develop from their natal gas distribution. Observational evidence indicates that many star clusters follow a Plummer-like density profile. However, most studies have focused on the phase after gas ejection, neglecting …

us, kz, de, ca (code pays fourni par la source)

Probing Supernovae through gravitational wave entropy

Aknur Sakan, Nurzhan Ussipov, Ernazar B. Abdikamalov, Almat Akhmetali et autres

We study an entropy-based framework to analyze gravitational-wave signals from core-collapse supernovae. We use waveforms generated by numerical simulations and analyze them in both the time domain and the time-frequency domain using short-time Fourier and continuous wavelet transforms. From each representation, we …

Assessing the Distance for Probing the Nuclear Equation of State with Supernova Gravitational Waves

Y. Sultan Abylkairov, Matthew Edwards, Artyom Ostrikov, Yersultan Tleukhanov et autres

Gravitational waves from core-collapse supernovae provide a unique probe of the equation of state (EOS) of high density matter. In this work, we focus on the bounce signal from numerical simulations of rotating supernovae and explore its potential for EOS inference. We …

Evaluating multi-GPU computing capabilities of Numba and CuPy

Tair Askar, Martin Lukáč, Bekdaulet Shukirgaliyev, Ernazar B. Abdikamalov

kz, jp (code pays fourni par la source)

Centrally concentrated star formation in young clusters

Adilkhan Assilkhan, Mordecai‐Mark Mac Low, Brooke Polak, Ernazar B. Abdikamalov et autres

The study of star cluster evolution necessitates modeling how their density profiles develop from their natal gas distribution. Observational evidence indicates that many star clusters follow a Plummer-like density profile. However, most studies have focused on the phase after gas ejection, neglecting …

Cloud-cloud collision and star formation in G013.313+0.193

Dilda Berdikhan, Jarken Esimbek, Christian Henkel, Ye Xu et autres

We study the G013.313+0.193 (G013.313) region, a complex environment characterised by molecular cloud interactions indicative of cloud-cloud collision (CCC). Observations of the NH3 (1,1) and (2,2) inversion transitions were obtained using the Nanshan 26 m radio telescope, while HCO+ (J = 1–0), …

cn, kz, sa, de (code pays fourni par la source)