Search Publications
Properties of galactic B[e] supergiants. V. Two-dimensional radiative transfer model of RY Sct and its dusty disc
Miroshnichenko, A. S.; Men'shchikov, A. B.
We present results of the first two-dimensional radiative transfer modelling of the eclipsing binary
Magnitude systems in old star catalogues
Yamaoka, Hitoshi; Fujiwara, Tomoko
The current system of stellar magnitudes originally introduced by Hipparchus was strictly defined by Norman Pogson in 1856. He based his system on Ptolemy's star catalogue, the Almagest, recorded in about AD137, and defined the magnitude-intensity relationship on a logarithmic scale.
Stellar magnitudes observed with the naked eye recorded in …High-energy pulse profile of the transient X-ray pulsar SAX J2103.5+4545
Goldoni, P.; Robba, N. R.; Bonnet-Bidaud, J. M. +6 more
Two recent INTEGRAL papers report a timing and spectral analysis of the transient Be/X-ray pulsar SAX J2103.5+4545 at high energies (5-200 keV). In this work we present for the first time a study of the pulse profile at energies above 20 keV using INTEGRAL data. The spin-pulse profile shows a prominent (with a duty cycle of 14%) and broad (with a …
The FIRST-Optical-VLA Survey for Lensed Radio Lobes
Muxlow, T. W. B.; Winn, Joshua N.; Kochanek, Christopher S. +7 more
We present results from a survey for gravitationally lensed radio lobes. Lensed lobes are a potentially richer source of information about galaxy mass distributions than lensed point sources, which have been the exclusive focus of other recent surveys. Our approach is to identify radio lobes in the Faint Images of the Radio Sky at Twenty cm (FIRST…
Observations of lion roars in the magnetosheath by the STAFF/DWP experiment on the Double Star TC-1 spacecraft
Walker, S. N.; Yearby, K. H.; Santolik, O. +5 more
Lion roars are intense, short duration packets of whistler mode waves, observed in the magnetosheath. They are typically seen coincident with the magnetic field minima of mirror mode waves. The orbit of the Double Star TC-1 spacecraft (570 km by 78970 km, inclination at 28.5 degrees) is ideal for observations of lion roars as the spacecraft is in …
Iron Fluorescent Line Emission from Black Hole Accretion Disks with Magnetic Reconnection-heated Corona
Iwasawa, K.; Mineshige, S.; Kawanaka, N.
We investigate the iron Kα fluorescent line produced by hard X-ray photons from the magnetic reconnection-heated corona. The hot corona with temperature of ~109 K can irradiate the underlying disk with a continuum X-ray spectrum produced via thermal Comptonization. Then the iron atoms in the disk photoelectrically absorb X-ray photons a…
SMART-1 after lunar capture: First results and perspectives
Schmidt, W.; Grande, M.; Keller, H. U. +19 more
Understanding Galaxy Formation with ISO Deep Surveys
Elbaz, David
We present the results obtained through the various ISO extragalactic deep surveys. Although IRAS revealed the existence of galaxies forming stars at a rate of a few tens (LIRGs) or even hundreds (ULIRGs) solar masses in the local universe, ISO not only discovered that these galaxies were already in place at redshift one, but also that they are no…
X-ray absorption and re-emission from an ionized outflow in the Type 1 quasi-stellar object 2MASS 234449+1221 observed by XMM-Newton
Wilkes, B. J.; Page, K. L.; Pounds, K. A.
We report on the analysis of a short XMM-Newton observation of the reddened Type 1 quasi-stellar object (QSO) 2MASS 234449+1221 first identified in the Two-Micron All-Sky Survey (2MASS). The underlying X-ray continuum is found to be typical of a broad-line active galaxy, with photon index Γ~ 1.9. Low-energy absorption can be modelled by a column N…
Intense Diffuse Far-Ultraviolet Emission from the Orion Nebula
Henry, R. C.; Murthy, Jayant; Sahnow, David J.
We present spectra of the diffuse far-UV (900-1200 Å) emission from a region near the Orion Nebula: the first high-resolution spectra of the diffuse background radiation. These observations were made using serendipitous Far Ultraviolet Spectroscopic Explorer (FUSE) observations and were only possible because of the strength of the diffuse emission…