The linear structure reported by P. van Dokkum et al. has been proposed as either a massive stellar wake produced by a runaway supermassive black hole (SMBH) or a bulgeless edge-on galaxy. New JWST/NIRSpec IFU observations by P. van Dokkum et al. target the tip of the structure, where a SMBH would produce a bow shock, whereas a normal galaxy would

The Javalambre VARiability Survey (J-VAR) is a photometric survey that is being carried out with the 0.8m Javalambre Auxiliary Survey Telescope, located at the Observatorio Astrofísico de Javalambre (Teruel, Spain), using a subset of seven filters from J-PLUS, covering the wavelength range 0.39─0.88 $\mu$m. The scientific objectives of J-VAR are

The Javalambre VARiability Survey (J-VAR) is a photometric survey that is being carried out with the 0.8m Javalambre Auxiliary Survey Telescope, located at the Observatorio Astrofísico de Javalambre (Teruel, Spain), using a subset of seven filters from J-PLUS, covering the wavelength range 0.39─0.88 $\mu$m. The scientific objectives of J-VAR are

Context. Wide-field, multi-filter photometric surveys enable the reconstruction of the Milky Way's star formation history (SFH) on Galactic scales and provide complementary insights into disc assembly. The 12-filter system of the Javalambre Photometric Local Universe Survey (J-PLUS) is particularly suitable, as its colours trace stellar chemical

Context. Extreme emission line galaxies (EELGs) are believed to significantly contribute to the star formation activity and mass assembly in galaxies. EELGs likely also play a leading role in the cosmic re-ionization as their interstellar medium may allow a significant fraction of their ionizing photons to escape (> 5%). Finding low-redshift

Fisher-matrix forecasts are presented for the cosmological surveys of the Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS) and the Subaru Prime Focus Spectrograph (PFS). The wide, low-redshift coverage of J-PAS and the high-density, high-redshift mapping of PFS are strongly complementary: combining the two reduces