Discovery of a wide planetary-mass companion of a brown dwarf in the Upper Scorpius association
We present the discovery of a 14-8+2 MJup companion located at 670 AU from UScoC-TIO 108, a 60+/-20 MJup brown dwarf of the very young Upper Scorpius...
Discovery of a ~205 Hz X-ray pulsar in the globular cluster NGC 6440
Discovery of a 205 Hz X-ray pulsar in the globular cluster NGC 6440 The globular cluster NGC 6440 was observed by the PCA instrument aboard RXTE on August 30...
On March 27.2UT CRTS discovered transient CSS120327:110520-015205 in data taken by the Catalina Sky Survey (CSS) Schmidt telescope (Drake et al. 2012, ATel#4011...
Discovery of Four New Ultra-compact Nuclear Rings in Three Spiral Galaxies
Ultra-compact nuclear rings (UCNRs) are ring-shaped star-forming regions around galactic nuclei that range in radius from a few to 200 pc. Only a handful are...
Discovery of kilohertz QPOs in RXTE observations of SAX J1748.9-2021.
We report on RXTE observations of the ongoing outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021 (Altamirano et al. 2008, 674, 45A, see ATEL...
Discovery of mHz QPOs and burst rate evolution in the active Terzan 5 neutron star transient
We report on RXTE observations of the neutron star transient currently active in Terzan 5 (also known as IGR J17480-2446; ATels #2919, #2920, #2922, #2924,...