Understanding possible electromagnetic counterparts to loud gravitational wave events: Binary black hole effects on electromagnetic fields

摘要

In addition to producing loud gravitational waves (GW), the dynamics of abinary black hole system could induce emission of electromagnetic (EM)radiation by affecting the behavior of plasmas and electromagnetic fields intheir vicinity. We here study how the electromagnetic fields are affected by apair of orbiting black holes through the merger. In particular, we show how thebinary's dynamics induce a variability in possible electromagnetically inducedemissions as well as an enhancement of electromagnetic fields during thelate-merge and merger epochs. These time dependent features will likely leavetheir imprint in processes generating detectable emissions and can be exploitedin the detection of electromagnetic counterparts of gravitational waves.