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Braneworld

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Full-Text Articles in Cosmology, Relativity, and Gravity

Death Line For Radio Pulsars In Braneworlds, Djavlanbek Rayimbaev, Satimbay Palvanov, Maksud Umaraliyev, Malika Khudoyberdiyeva Apr 2020

Death Line For Radio Pulsars In Braneworlds, Djavlanbek Rayimbaev, Satimbay Palvanov, Maksud Umaraliyev, Malika Khudoyberdiyeva

Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences

We investigate the effects of braneworlds on energetic processes in plasma. magnetosphere of neutron stars. Obtained that the presence of brane charge causes an increase in the size of the polar cap region. It has shown that the polar capsize of neutron stars with larger rotation period and compactness parameter is also larger. We have studied deathline of radio pulsar in braneworld. Obtained that the deathline shifted down and the pulsars which lying on the deathline become visible in radio band. Moreover, we have extended particle acceleration in polar cap of neutron stars in the presence of the brane charge, …


Test Particle Motion Around Brany Black Hole Immersed In An External Asymptotically Uniform Magnetic Field, Djavlanbek Rayimbaev, Azamjon Rakhmatov, Satimbay Palvanov, Ahror Mamadjanov Jun 2019

Test Particle Motion Around Brany Black Hole Immersed In An External Asymptotically Uniform Magnetic Field, Djavlanbek Rayimbaev, Azamjon Rakhmatov, Satimbay Palvanov, Ahror Mamadjanov

Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences

We investigate circular motion of charged and neutral particles around non-rotating black hole immersed in an external asymptotically uniform magnetic field. The effects of braneworlds on innermost circular stable orbits have been considered. Shown that innermost circular orbits (ISCO) decreases in decreasence of both brane charge and particle charge. Moreover, we have investigated energy extraction from black holes in braneworld through collision of two particles. Obtained that the presence of the brane charge parameter causes to decrease of the value of center of mass energy of colliding two charged particles, it means the brane charge acts as an additional gravity.