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Fermi J1544-0649 is a transient GeV source first detected during its GeVflares in 2017. Multi-wavelength observations during the flaring timedemonstrate variability and spectral energy distribution(SED) that are typicalof a blazar. Other than the flare time, Fermi J1544-0649 is quiet in the GeVband and looks rather like a quiet galaxy (2MASX J15441967-0649156) for adecade. Together with the broad absorption lines feature we further explore the"misaligned blazar scenario". We analyzed the Very Long Baseline Array (VLBA)and East Asian VLBI Network (EAVN) data from 2018 to 2020 and discovered thefour jet components from Fermi J1544-0649. We found a viewing angle around3.7{\deg} to 7.4{\deg}. The lower limit of the viewing angle indicates a blazarwith an extremely low duty cycle of the gamma-ray emission, the upper limit ofit supports the "misaligned blazar scenario". Follow-up multi-wavelengthobservations after 2018 show Fermi J1544-0649 remains quiet in GeV, X-ray, andoptical bands. Multi-messenger search of neutrinos is also performed, and anexcess of 3.1 {\sigma} significance is found for this source.

Is Fermi 1544-0649 a misaligned blazar? discovering the jet structure with VLBI