Sahu, SurajSurajSahuJoshi, BhuwanBhuwanJoshiSterling, Alphonse C.Alphonse C.SterlingMitra, Prabir K.Prabir K.MitraMoore, Ronald L.Ronald L.Moore2025-08-312025-08-312022-05-0110.3847/1538-4357/ac5cc12-s2.0-85130172195http://repository.iitgn.ac.in/handle/IITG2025/26106We analyze the formation mechanism of three homologous broad coronal mass ejections (CMEs) resulting from a series of solar blowout-eruption flares with successively increasing intensities (M2.0, M2.6, and X1.0). The flares originated from NOAA Active Region 12017 during 2014 March 28-29 within an interval of ≈24 hr. Coronal magnetic field modeling based on nonlinear force-free field extrapolation helps to identify low-lying closed bipolar loops within the flaring region enclosing magnetic flux ropes. We obtain a double flux rope system under closed bipolar fields for all the events. The sequential eruption of the flux ropes led to homologous flares, each followed by a CME. Each of the three CMEs formed from the eruptions gradually attained a large angular width, after expanding from the compact eruption-source site. We find these eruptions and CMEs to be consistent with the "magnetic-arch-blowout"scenario: each compact-flare blowout eruption was seated in one foot of a far-reaching magnetic arch, exploded up the encasing leg of the arch, and blew out the arch to make a broad CME.trueArticlehttps://doi.org/10.3847/1538-4357/ac5cc1153843571 May 2022541arJournal3