Charged black hole in $4D$ Einstein-Gauss-Bonnet gravity: Particle motion, plasma effect on weak gravitational lensing and centre-of-mass energy

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We study the motion of charged and spinning particles and photons in the $4D$ charged Einstein-Gauss-Bonnet (EGB) black hole vicinity.

• We determine the radius of the innermost stable circular orbit (ISCO) for test particles.
• We show that the combined effect of the Gauss-Bonnet (GB) coupling parameter and black hole charge decreases the ISCO and the radius of the photon sphere.
• Further, we study the gravitational deflection angle and show that the impact of GB term and black hole charge on it is quite noticeable.