Out There Now
OTN Ep #008: MAXI J1820+070 and TCP J04432130+4721280 (Nova V392 Per)
We share a report of the black hole candidate MAXI J1820+070. Observations of the source in the X-ray band have tracked its variability – in particular, its QPO (that’s, quasi-periodic oscillations) and found that the frequency is increasing with time...