8 papers
Imprints of core/cusp dark matter distributions on black hole signatures in galaxies
Hassan Hassanabadi, Che-Yu Chen, Soroush Zare +1
In galactic environments, a host dark matter (DM) halo can imprint weak but coherent corrections on black hole (BH) strong-field observables. We construct an exact family of static…
Phase-space structure and nonlinear dynamics of a charged particle on a helicoidal manifold under a magnetic field
Abdullah Guvendi, Hassan Hassanabadi, Semra Gurtas Dogan +1
We analyze the classical dynamics of a charged particle constrained to a helicoidally embedded Riemannian manifold in under a uniform magnetic field in the ambient s…
Charged particle dynamics in singular spacetimes: hydrogenic mapping and curvature-corrected thermodynamics
Abdullah Guvendi, Semra Gurtas Dogan, Omar Mustafa +1
We analyze the dynamics of charged test particles in a singular, horizonless spacetime arising as the massless limit of a charged wormhole in the Einstein--Maxwell--Scalar (EMS) fr…
Probing regular black holes with sub-Planckian curvature through periodic orbits and their gravitational wave radiation
Soroush Zare, Tao Zhu, Luis M. Nieto +2
Extreme mass-ratio inspirals (EMRIs) are among the key targets for future space-based gravitational wave detectors. The gravitational waveforms emitted by EMRIs are highly sensitiv…
Modified Kerr black holes surrounded by dark matter spike
Salvatore Capozziello, Soroush Zare, Luis M. Nieto +1
We study supermassive black holes (SMBH), surrounded by a dark matter (DM) spike, that can be found at the centers of Milky Way and galaxies and are accompanied by a s…
Two types of -Gaussian distributions used to study the diffusion in a finite region
Won Sang Chung, L. M. Nieto, Soroush Zare +1
In this work, we explore both the ordinary -Gaussian distribution and a new one defined here, determining both their mean and variance, and we use them to construct solutions of…