Speaker
Description
The radio emission from Microquasars (MQs), Little Red Dots (LRDs) and Active Galactic Nuclei (AGN) is crucial to gain insight into the mass accretion, relativistic jets and feedback of black holes (BHs) in these astronomical objects. Based on archived radio monitoring data and the VLASS and FIRST sky surveys of the National Radio Observatory (NRAO), were obtain the following achievements: (1) An understanding of the General Relativity physics in the inner accretion disk to the BH in the microquasar GRS 1915+105, at the time of unusually large changes in the BH-jets during a deep X-ray obscured and high mid-infrared luminosity state observed with the JWST1. (2) So far LRDs at z > 5 have been radio silent. However, using NRAO archive data was found radio emission associated to two LRD analogues at z = 0.1–0.2 (ref. 2). More recently, using the VLASS and FIRST surveys was identified at z ≃ 0.4 a radio bright LRD analogue. (3) The intriguing radio silence of the otherwise active BHs in LRDs and some types of AGN has been intensively debated and remains without an explanation with general consensus. (4) In this talk it will be shown that the suppression of radio synchrotron emission from active BHs in LRDs and AGN may due to an Inverse Compton mechanism when the accreting BHs are embedded in nuclear bursts of massive stars.