Latest Soft X-ray transient Stories
A new stellar-mass black hole has been discovered in our galaxy by NASA's Swift satellite. High-energy X-rays emanating from a source towards the center of our Milky Way galaxy were observed, indicating the presence of a previously unknown black hole.
Studies of one of the galaxy's most active black-hole binaries reveal a dramatic change that will help scientists better understand how these systems expel fast-moving particle jets.
ESAâ€™s X-ray observatory XMM-Newton has revealed a new class of exploding stars â€“ where the X-ray emission â€˜lives fast and dies youngâ€™.
ESAâ€™s Integral gamma-ray observatory has discovered a new, highly populated class of X-ray fast â€˜transientâ€™ binary stars, undetected in previous observations.
X-ray Binaries -- X-ray binaries are a class of binary stars that are very luminous in X-rays. The X-rays are produced by matter falling from one component (usually a relatively normal star) to the other component, which is a neutron star or a black hole. The infalling matter releases gravitational potential energy, up to several tens of per cent of its rest mass as X-rays. (Hydrogen fusion releases about 0.7 per cent of rest mass) X-ray binaries are further subdivided into...
- An uxorious, effeminate, or spiritless man.
- A timorous, cowardly fellow.