Search Publications
Nine-hour X-ray quasi-periodic eruptions from a low-mass black hole galactic nucleus
Read, A. M.; Knigge, C.; Heywood, I. +11 more
In the past two decades, high-amplitude electromagnetic outbursts have been detected from dormant galaxies and often attributed to the tidal disruption of a star by the central black hole1,2. X-ray emission from the Seyfert 2 galaxy GSN 069 (2MASX J01190869-3411305) at a redshift of z = 0.018 was first detected in July 2010 and implies …
Observation of inverse Compton emission from a long γ-ray burst
Maraschi, L.; Troja, E.; Piro, L. +304 more
Long-duration γ-ray bursts (GRBs) originate from ultra-relativistic jets launched from the collapsing cores of dying massive stars. They are characterized by an initial phase of bright and highly variable radiation in the kiloelectronvolt-to-megaelectronvolt band, which is probably produced within the jet and lasts from milliseconds to minutes, kn…
General relativistic orbital decay in a seven-minute-orbital-period eclipsing binary system
Kulkarni, S. R.; Duev, Dmitry A.; Riddle, Reed +23 more
General relativity1 predicts that short-orbital-period binaries emit considerable amounts of gravitational radiation. The upcoming Laser Interferometer Space Antenna2 (LISA) is expected to detect tens of thousands of such systems3 but few have been identified4, of which only one5 is eclipsing—…
Disruption of the Orion molecular core 1 by wind from the massive star θ1 Orionis C
Teyssier, D.; Goicoechea, J. R.; Stutzki, J. +10 more
Massive stars inject mechanical and radiative energy into the surrounding environment, which stirs it up, heats the gas, produces cloud and intercloud phases in the interstellar medium, and disrupts molecular clouds (the birth sites of new stars1,2). Stellar winds, supernova explosions and ionization by ultraviolet photons control the l…
An X-ray chimney extending hundreds of parsecs above and below the Galactic Centre
Haberl, F.; Churazov, E.; Nandra, K. +6 more
Evidence has mounted in recent decades that outflows of matter and energy from the central few parsecs of our Galaxy have shaped the observed structure of the Milky Way on a variety of larger scales1. On scales of 15 parsecs, the Galactic Centre has bipolar lobes that can be seen in both the X-ray and radio parts of the spectrum2,3…
A recurrent nova super-remnant in the Andromeda galaxy
Ness, J. -U.; Henze, M.; Shafter, A. W. +15 more
The accretion of hydrogen onto a white dwarf star ignites a classical nova eruption1,2—a thermonuclear runaway in the accumulated envelope of gas, leading to luminosities up to a million times that of the Sun and a high-velocity mass ejection that produces a remnant shell (mainly consisting of insterstellar medium). Close to the upper m…