  We present a review on galaxy black hole co-evolution through merger, star
formation and AGN-jet feedback. We highlight results on transitional galaxies
(e.g. NGC1482, NGC6764, NGC3801, Speca, RAD-18 etc.) which has data from Giant
Meterwave Radio Telescope (GMRT) and other sub-mm, IR, optical, UV and X-ray
telescopes. The `smoking gun' relic-evidences of past AGN-jet feedback which is
believed to have quenched star formation in transitional galaxies are still
missing. Relic radio lobes, as old as a few hundred Myr, can be best detected
at low radio frequencies with the GMRT, LOFAR and in future SKA. However,
similar relic evidences of quasar activities, known as `Hanny's Voorwerp'
discovered by Galaxy Zoo in optical data, are only around a few tens of
thousand years old. More discoveries are needed to match these time-scales with
time since the decline of star formation in transitional galaxies. Such faint
fuzzy relic emissions in optical and angular-scale sensitive radio
interferometric images can be discovered most efficiently by citizen-scientists
but with a formal training. We describe RAD@home, the only Indian
citizen-science research project in astronomy which takes such a modified
approach. We present interesting objects, discovered from the TIFR GMRT Sky
Survey (TGSS) by 69 trained citizen-scientists or e-astronomers, like relic
radio lobes, episodic radio galaxies, jet-galaxy interaction, bent radio galaxy
in filament etc.. This model can provide an equal opportunity of
academic-growth to people even in the under-developed regions where we always
need to establish our optical and radio telescopes. This can expand the
research-activity of city-based research-institutes beyond their four brick
walls, and alleviate various socio-economic and geo-political constraints on
growth of citizens located in remote areas. #RADatHomeIndia #ABCDresearch
