News
A Be-type star with a black hole companion.
Stellar-mass black holes have all been discovered through X-ray emission, which arises from the accretion of gas from their binary companions (this gas is...
-
-
NewsA Black Hole Nova Obscured by an Inner Disk Torus.
Stellar-mass black holes (BHs) are mostly found in X-ray transients, a subclass of X-ray binaries that exhibit violent outbursts. None of the ~50 galactic BHs...
-
NewsA candidate massive black hole in the low-metallicity dwarf galaxy pair Mrk 709.
The incidence and properties of present-day dwarf galaxies hosting massive black holes (BHs) can provide important constraints on the origin of high-redshift BH...
-
NewsA chromospheric resonance cavity in a sunspot mapped with seismology
Sunspots are intense collections of magnetic fields that pierce through the Sun’s photosphere, with their signatures extending upwards into the outermost...
-
NewsA crucial test for astronomical spectrograph calibration with frequency combs
Laser frequency combs (LFCs) are well on their way to becoming the next-generation calibration sources for precision astronomical spectroscopy. This development...
-
NewsA distance of 13 Mpc resolves the claimed anomalies of the galaxy lacking dark matter
The claimed detection of a diffuse galaxy lacking dark matter represents a possible challenge to our understanding of the properties of these galaxies and...
-
NewsA giant exoplanet orbiting a very-low-mass star challenges planet formation models
Surveys have shown that super-Earth and Neptune-mass exoplanets are more frequent than gas giants around low-mass stars, as predicted by the core accretion...
-
NewsA giant interstellar bubble being grown in the Andromeda galaxy
The combination of a white dwarf mass close to the Chandrasekhar limit (1.4 solar masses) and a fast hydrogen accretion rate (10-7 solar masses per year) from a...
-
NewsA giant planet candidate transiting a white dwarf
Astronomers have discovered thousands of planets outside the Solar System, most of which orbit stars that will eventually evolve into red giants and then into...