Search Publications
In-flight calibration of the Cassini-Radio and Plasma Wave Science (RPWS) antenna system for direction-finding and polarization measurements
Gurnett, Donald A.; Fischer, Georg; Lecacheux, Alain +10 more
One major objective of the Cassini mission is the analysis of Saturnian radio emissions of magnetospheric (auroral) as well as atmospheric (lightning) origin. The Radio and Plasma Wave Science (RPWS) experiment is designed to measure the full polarization and the wave vector of the incoming radio waves, allowing us to retrieve information on sourc…
Discovery of a Soft Spectral Component and Transient 22.7 Second Quasi-periodic Oscillations of SAX J2103.5+4545
Baykal, A.; İnam, S. Ç.; Swank, J. +1 more
XMM-Newton observed SAX J2103.5+4545 on 2003 January 6, while the Rossi X-Ray Timing Explorer (RXTE) was also monitoring the source. Using the RXTE Proportional Counter Array data set between 2002 December 3 and 2003 January 29, the spin period and average spin-up rate during the XMM-Newton observations were found to be 354.7940+/-0.0008 s and (7.…
XMM-Newton observation of the most X-ray-luminous galaxy cluster RX J1347.5-1145
Schindler, S.; Gitti, M.
We report on an XMM-Newton observation of RX J1347.5-1145 (z=0.451), the most luminous X-ray cluster of galaxies currently known, with a luminosity LX = 6.0 ± 0.1 × 1045 erg/s in the [2-10] keV energy band. We present the first temperature map of this cluster, which shows a complex structure. It identifies the cool core and a…
Observations of Cold Dust in Nearby Elliptical Galaxies
Kuno, Nario; Haas, Martin; Sansom, Anne E. +2 more
Spectral energy distribution (SED) analyses that include new millimeter to far-infrared (FIR) observations obtained with continuum instruments on the Nobeyama and James Clerk Maxwell Telescopes and the Infrared Space Observatory are presented for seven nearby (<45 Mpc) FIR-bright elliptical galaxies. These are analyzed together with archival FI…
Infrared Surface Brightness Fluctuations of Magellanic Star Clusters
Liu, Michael C.; Bruzual A., Gustavo; González, Rosa A.
We present surface brightness fluctuations (SBFs) in the near-IR for 191 Magellanic star clusters available in the Second Incremental and All Sky Data releases of the Two Micron All Sky Survey (2MASS) and compare them with SBFs of Fornax Cluster galaxies and with predictions from stellar population models as well. We also construct color-magnitude…
Bimodal distribution of the autocorrelation function in gamma-ray bursts
Borgonovo, L.
Autocorrelation functions (ACFs) are studied for a sample of 16 long gamma-ray bursts (GRBs) with known redshift z, that were observed by the BATSE and Konus experiments. When corrected for cosmic time dilation, the ACF shows a bimodal distribution. A narrow width class (11 bursts) has at half-maximum a mean width τ'0=1.6 s with a relat…
The eclipsing massive X-ray binary M 33 X-7: New X-ray observations and optical identification
Pietsch, W.; Haberl, F.; Ehle, M. +3 more
The eclipsing X-ray binary
XMM-Newton probes the stellar population in Chamaeleon I South
Neuhäuser, R.; Micela, G.; Stelzer, B.
We report on a 30 ks XMM-Newton observation of the central region of the Cha I star forming cloud. The field includes a substantial fraction of the known pre-main-sequence population of Cha I South, including all thirteen known very-low mass Hα emitters. We detect two bona-fide brown dwarfs (spectral types M 7.5 and M 8) and seven Hα emitting obje…
A two-dimensional Alfvén wave-driven solar wind model with proton temperature anisotropy
Li, Xing; Li, Bo; Habbal, Shadia R. +1 more
We present the first two-dimensional (2-D) Alfvén wave turbulence-driven solar wind model which takes the proton temperature anisotropy into account. While the modeled proton temperature anisotropy in the fast solar wind is established in the inner corona and yields Tp∥/Tp⊥ = 0.57 at 1 AU, which is compa…
Geometry of an interplanetary CME on October 29, 2003 deduced from cosmic rays
Marubashi, K.; Bieber, J. W.; Evenson, P. +16 more
A coronal mass ejection (CME) associated with an X17 solar flare reached Earth on October 29, 2003, causing an ~11% decrease in the intensity of high-energy Galactic cosmic rays recorded by muon detectors. The CME also produced a strong enhancement of the cosmic ray directional anisotropy. Based upon a simple inclined cylinder model, we use the an…