Search Publications
Chaotic gravitational zones around a regularly shaped complex rotating body
Mysen, E.; Aksnes, K.; Olsen, Ø.
In preparation for the Rosetta mission, the location and widths of gravitational resonances surrounding a regularly shaped and possibly complex rotating body are mapped following the second fundamental model of resonance. It is found that for uniaxial rotation of the central body, the surrounding resonances are widest for prograde orbits. If the f…
Remote sensing of a magnetotail reconnection X-line using polar rain electrons
Lucek, E.; Owen, C. J.; Sergeev, V. +3 more
We report on electron phase space distributions (PSDs) observed near the plasma sheet (PS) boundary layer (PSBL) by the Cluster electron spectrometers when the northern lobe was occupied by significant fluxes of polar rain (PR) electrons. These observations reveal the spatial structure of the electron transition layer (TL) between the polar rain e…
Planetary nebula candidates in extragalactic young star clusters
Larsen, S. S.; Richtler, T.
Context: .During an analysis of optical spectra of 80 young star clusters in several nearby spiral galaxies, [O III] and [N II] emission lines were noted in some cases. Three of these emission line sources are associated with clusters older than 30 Myr, and are identified as likely planetary nebula (PN) candidates.
Aims: .These objects may re…
Comment on ``Estimated solar contribution to the global surface warming using the ACRIM TSI satellite composite'' by N. Scafetta and B. J. West
Lean, Judith L.
Abstract Available from http://www.agu.org
Coronal mass ejections associated with polar crown filaments
Wang, Yuming; Wang, Jingxiu; Zhou, Guiping
In the sample of 301 well identified earth-directed halo coronal mass ejections (CMEs) from March 1997 to December 2003, all 21 CMEs associated with polar crown filament (PCF) eruptions are analyzed. Here, the PCFs are viewed as the filaments that partially or totally lie along the boundaries of polar coronal holes, with average length over 1000″,…
Properties and nature of Be stars. 24. Better data and model for the Be+F binary V360 Lacertae
Wolf, M.; Harmanec, P.; Yang, S. +10 more
Aims.We include existing photometric and spectroscopic material with new observations in a detailed study of the Be+F binary
Methods: .We used the programs FOTEL and KOREL to derive an improved linear ephemeris and to disentangle the line profiles of both binary components and telluric lines. The BINSYN software su…
Recent star formation in the inner Galactic Bulge seen by ISOGAL. I. Classification of bright mid-IR sources in a test field
Price, S. D.; Glass, I. S.; Omont, A. +3 more
Context.The stellar populations in the central region of the Galaxy are poorly known because of the high visual extinction and very great source density in this direction.
Aims.To use recent infrared surveys for studying the dusty stellar objects in this region.
Methods.We analyse the content of a ∼20×20 arcmin2 field centred at (…
A Flare of AE Aquarii Observed with XMM-Newton
Dotani, Tadayasu; Choi, Chul-Sung
We present the results of analyzing the XMM-Newton data obtained in 2001 November 7-8. A flare is observed simultaneously in X-ray and UV together with a quiescence. We find that during the flare event X-ray flux varies with UV with no significant time lag, indicating a close correlation of flux variation for X-ray and UV flares. An upper limit of…
XMM-Newton and ESO observations of the two unidentified γ-ray sources 3EG J0616-3310 and 3EG J1249-8330
Bignami, G. F.; Schirmer, M.; Hatziminaoglou, E. +3 more
The limited angular resolution of γ-ray telescopes prevents a direct identification of the majority of sources detected so far. This is particularly true for the low latitude, probably galactic, ones only 10% of which has been identified. Most counterparts of the identified low-latitude γ-ray sources are Isolated Neutron Stars (INS), both radio-lo…
Luminous Compact Blue Galaxies in Intermediate-Redshift Galaxy Clusters: A Significant but Extreme Butcher-Oemler Population
Bershady, M. A.; Hoessel, J. G.; Crawford, S. M. +1 more
We identify a population of luminous compact blue galaxies (LCBGs) in two galaxy clusters: MS 0451.6-0305 (z=0.54) and Cl 1604+4304 (z=0.9). LCBGs are identified via photometric characteristics and photometric redshifts derived from broad- and narrowband images taken with the WIYN telescope and the Hubble Space Telescope (HST). We analyze their su…