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A survey of radio jets with Chandra and HST
Sambruna, Rita M.
Relativistic jets are a common property of radio-loud Active Galactic Nuclei (AGN). Understanding jet physical properties is an essential precursor to understanding the mechanisms of energy transport, and ultimately, how energy is extracted from the central black hole. In this paper, I highlight recent developments from Chandra and HST observation…
Correction to "Low energy charged particles in the high latitude heliosphere: Comparing solar maximum and solar minimum"
Lanzerotti, L. J.; Gold, R. E.; Maclennan, C. G.
Ulysses: the forgotten mission
Cooper, Keith
Ulysses spacecraft is searching for gamma-ray bursts, interstellar dust and magnetic fields, solar wind, radio radiation. It is underway since 13 years.
Le système de détection du spectromètre de masse à double focalisation de l'expérience ROSINA: la participation belge à la mission Rosetta
Neefs, Eddy; Nevejans, Dennis; Schoon, Niels +1 more
Diffuse Baryons in Cosmic Structures
Cavaliere, Alfonso
I review the processes that govern the amount and the thermal state of the hot plasma pervading clusters and groups of galaxies: the gravitational heating driven by the DM merging histories, the radiative cooling of baryons, and the energy fed back by SNe and by AGNs or quasars. I argue that the X-ray emissions and the entropy levels now observed …
A comparison of the use of genetic and hill-climbing algorithms to fit low-l solar p-mode spectra
Chaplin, W. J.; Elsworth, Y.; Fletcher, S. T.
We present a comparative study of low-l solar p-mode parameters extracted by genetic-algorithm and `standard' hill-climbing minimisation routines. To effect this we make use of observations made in integrated sunlight by the Birmingham Solar-Oscillations Network (BiSON) and the GOLF instrument on board the ESA/NASA SOHO satellite, in addition to a…
High Dispersion Optical Spectroscopy of Planetary Nebulae
Hyung, Siek
HST/FOS Eclipse mapping of IP Pegasi in outburst
Horne, K.; Saito, R. K.; Baptista, R.
IP Pegasi is a deeply eclipsing dwarf nova (Porb= 3.8 hr) which shows 1-2 weeks-long, ≃ 2 mag outbursts every 60-120 days. During outbursts, tidally induced spiral shocks form in its accretion disc as the disc expands and its outer parts feel more effectively the gravitational attraction of the companion star (Steeghs, Harlaftis & H…
Chandra and XMM-Newton Results on the Hubble Constant from Gravitational Lensing
Garmire, G. P.; Dai, X.; Chartas, G.
We report the first detection of time-delayed flares in single X-ray observations of the gravitationally lensed quasar PG 1115+080 performed with the Chandra and XMM observatories. By combining our observed short time-delay between images A1 and A2 of PG 1115+080 of ΔtA1A2 = 0.149 ±0.006 days with recent constraints on the mass fraction…
The XMM-Newton Bright Serendipitous Survey: First Extragalactic Results
Wolter, Anna; Maccacaro, Tommaso; Braito, Valentina +3 more
We present here some initial results from the ongoing XMM-Newton bright serendipitous survey. The survey is aimed at selecting and spectroscopically identifying a large and statistically representative sample of bright (fx ≳ 7× 10‑14 c.g.s) serendipitous X-ray sources in the 0.5–4.5 keV energy band (BSS) and a complementary (…