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INTEGRAL results on GRB 030320: A long gamma-ray burst detected at the edge of the field of view
Covino, S.; Götz, D.; Mereghetti, S. +9 more
GRB 030320 is the 5th gamma-ray burst (GRB) detected by INTEGRAL in the field of view (FoV). It is so far the GRB with the largest off-axis angle with respect to the INTEGRAL pointing direction, near to the edge of the FoV of both main instruments, IBIS and SPI. Nevertheless, it was possible to determine its position and to extract spectra and flu…
Cipher, A Polarimeter Telescope Concept for Hard X-Ray Astronomy
Stephen, J. B.; Caroli, E.; Curado da Silva, R. M. +1 more
The polarisation of astrophysical source emission in the energy range from a few tens of keV up to the MeV region is an almost unexplored field of high-energy astrophysics. Till date, polarimetry in astrophysics in the energy domain from hard X-rays up to soft γ-rays has not been pursued due to the difficulties involved in obtaining sufficient sen…
Discovery of a faint R-band drop-out: A strongly reddened lensed star forming galaxy at z = 1.68
Kneib, J. -P.; Schaerer, D.; Pelló, R. +2 more
We report the discovery of an unusual emission line galaxy at redshift z=1.68 found from near-IR imaging and spectroscopic observations with ISAAC/VLT of a faint gravitationally lensed R-band drop-out behind the lensing cluster Abell 1835. From the emission lines of [O II] lambda 3727i, and Hβ this galaxy shows a moderate to high excitation and li…
HST Photometry of trans-Neptunian Objects
Buie, M. W.; Spencer, J. R.; Cruikshank, D. P. +6 more
From July 2001 to June 2002, an HST snapshot program obtained V, R and I photometry for 72 TNOs. The TNOs were sorted by dynamical class, and Spearman rank correlation statistics were calculated for each combination of color and orbital parameter. No strong correlations were found for the combined sample of TNOs, the resonant TNOs, or the non-reso…
SOHO/LASCO observation of an outburst of Comet 2P/Encke at its 2000 perihelion passage
Lamy, P.; Groussin, O.; Biesecker, D. A.
Comet 2P/Encke was observed with the SOHO/LASCO C2 and C3 coronagraphs over a time interval of 11 days, starting 4 days before its September 2000 perihelion passage and through several broadband visible filters. The lightcurve reveals an outburst which started 4.9 days after perihelion, with the brightness of the coma increasing by 1.5 mag in just…
Simultaneous ASCA and Hubble Space Telescope/GHRS Observations of Cygnus X-2/V1341 Cygni
McCray, R.; Raymond, J. C.; Kallman, T. +4 more
We present results from ultraviolet and X-ray observations of the low-mass X-ray binary Cygnus X-2. The simultaneous Hubble Space Telescope/GHRS and ASCA observations took place during the low state of an 82 day cycle. We compare our observations as well as archival IUE and RXTE data with models that predict ultraviolet and optical continuum emiss…
ERO R1 in the Field of CL 0939+4713: Evidence for an S0-like Galaxy at z ~ 1.5
Kobayashi, Naoto; Terada, Hiroshi; Imanishi, Masatoshi +11 more
We present further observations of the extremely red object ERO J094258+4659.2, identified earlier by Iye et al. as ERO R1 in their deep images of the cluster A851. We estimate its redshift independently by eight-band photometric redshift determination and cross-correlation of a new H-band spectrum with the optical spectra of local E/S0 galaxies a…
Modeling radio emission attenuation lanes observed by the Galileo and Cassini spacecraft
Gurnett, D. A.; Hospodarsky, G. B.; Kurth, W. S. +3 more
The Cassini gravity-assisted flyby of Jupiter provided an opportunity to investigate radio emission attenuation lanes that were previously observed in the Voyager and Galileo data. The Cassini radio and plasma wave science (RPWS) investigation is the most advanced plasma wave instrument to visit the Jovian system, measuring electric fields over th…
Near-source and remote observations of kilometric continuum radiation from multispacecraft observations
Gurnett, D. A.; Pickett, J. S.; Menietti, J. D. +2 more
Kilometric continuum (KC) radiation was first identified from Geotail plasma wave observations. Past authors have shown that this emission has a frequency range that overlaps that of the auroral kilometric radiation (AKR) but is characterized by a fine structure of narrow-bandwidth, linear features that have nearly constant or drifting frequency. …
New Identifications of Mn VII and Fe VIII Lines Belonging to Transitions of the Type 3p64p-3p64d and 3p53d2-3p64d
Feldman, U.; Ekberg, J. O.
The Solar Ultraviolet Measurements of Emitted Radiation (SUMER) spectrometer aboard the Solar and Heliospheric Observatory (SOHO) recorded a large number of spectra in the 500-1600 Å region. Many of the detected spectral lines have been identified as transitions in ions from elements with low-to-moderate atomic numbers (Z<=20). However, a subst…