biretta

n.

四角帽；

复数：birettas

HUBBLE SPACE TELESCOPE Observations of Superluminal Motion in the M87 Jet
Formation of the radio jet in M87 at 100 Schwarzschild radii from the central black hole
Deep 10 Micron Imaging of M87
Hubble Space Telescope Snapshot Survey of 3CR Radio Source Counterparts. III. Radio Galaxies with z<0.1
The radio to X-ray spectrum of the M87 jet and nucleus
HST Snapshot Survey of 3CR Radio Source Counterparts. I. Intermediate Redshifts
Detection of Proper Motions in the M87 Jet
Hubble Space Telescope Snapshot Survey of 3CR Radio Source Counterparts. II. Radio Galaxies with Z > 0.5
Detection of Proper Motions in the M87 Jet
The Outburst of HST-1 in the M87 Jet