Speca, discovered in 2011, is an exotic radio galaxy or a galaxy where the central supermassive black hole is actively accreting matter surrounding itself and ejects two giant, million light year long, plasma lobes in opposite directions.Speca is located around 1.9 billion Light-year away in the constellation Virgo.
Soon after this, search for Speca-like exotic objects were intensified, and in the next 12 years the total number increased to close to three dozen. Due to its exotic nature, some have started calling it Spiral DRAGNs, despite the word DRAGNs not used commonly for Radio galaxy. The growing list can be found here List of Spiral DRAGNs. Since such galaxies are rarely seen in nearby Universe and elliptical galaxies were yet to form in the formative era of our Universe, it has been speculated that, Speca-like radio galaxies hosted in giant spirals may be more common in the young Universe. Future observations with giant optical telescopes (e.g. Thirty Metre telescope, Extremely Large Telescope ) combined with sensitive observations with low frequency radio telescopes ( e.g. LOFAR, Giant Meterwave Radio Telescope and Square Kilometre Array Observatory ) may find many of them to understand galaxy evolution better.
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