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Ion cyclotron waves in the Saturnian magnetosphere associated with Cassini's engine exhaust
Russell, C. T.; Dougherty, M. K.; Khurana, K. K. +3 more
Five hours after the orbit insertion maneuver that placed Cassini into orbit about Saturn, a long (90 minute) burst of ion cyclotron waves were seen, very different than any waves on the inbound leg of the orbit or on succeeding orbits. The ion cyclotron waves were left-hand elliptically polarized and propagating at a moderately large angle to the…
Multipoint Analysis of the Temporal Scale of Bursty Bulk Flow Events during the Quiet Time of Magnetotail
Dandouras, I.; Reme, H.; Cao, Jin-Bin +3 more
A series of Bursty Bulk Flow events (BBFs) were observed by CLUSTER satellites during the quiet time of the magnetotail in 2001. The data of multi-satellites of CLUSTER show that the duration of BBFs observed by multi-satellites is longer than that of BBFs previously observed by single satellite. The duration of multi-satellites is about twice tha…
ISO observations of the interacting galaxy Markarian 297. with the powerful supernova remnant 1982aa
Hanlon, L.; McBreen, B.; Clavel, J. +10 more
Markarian (Mkn) 297 is a complex system comprised of two interacting galaxies that has been modelled with a variety of scenarios. Observations of this system were made with the Infrared Space Observatory (ISO) using the ISOCAM, ISOPHOT and LWS instruments. ISOCAM maps at 6.7 µm, 7.7 µm, 12 µm and 14.3 µm are presented which…
Spatial structure of beamlets according to Cluster observations
Zelenyi, L. M.; Sauvaud, J. -A.; Dunlop, M. W. +4 more
Beamlets are sporadic bursty ion beams with energies about 10-30 keV observed in the lobes - plasma sheet interface. To investigate the spatial structure of this phenomenon we used Cluster data for the fall and summer of 2001 time interval. Both case study and statistical study have been performed. At a later stage of statistical study Interball d…
The INTEGRAL HESS/MAGIC connection: A new class of cosmic high energy accelerators from keV to TeV
Ubertini, P.
The recent completion and operation of the High Energy Stereoscopic System [1], an array of ground based imaging Cherenkov telescopes, has provided a survey with unprecedented sensitivity of the inner part of the Galaxy and revealed a new population of very high energy gamma-rays sources emitting at E > 100 GeV. Most of them were reported to ha…
The XMM-Newton/2dF survey - VIII. The extended X-ray sources
Georgakakis, A.; Georgantopoulos, I.; Plionis, M. +2 more
We present a sample of eight extended X-ray sources detected in the wide-field (~2.3 deg2), bright (2-10 ks) XMM-Newton/2dF survey, reaching a flux limit of ~2 × 10-14 erg s-1 cm-2. Of these, seven are identified as secure X-ray clusters in the soft 0.3-2 keV band using a standard wavelet algorithm on ei…
Polar Coronal Holes During Solar Cycles 22 and 23
Woch, J.; Zhang, Jun; Solanki, S.
Data from the Solar Wind Ion Composition Spectrometer (SWICS) on Ulysses and synoptic maps from Kitt Peak are used to analyze the polar coronal holes of solar activity cycles 22 and 23 (from 1990 to end of 2003). In the beginning of the declining phase of solar cycles 22 and 23, the north polar coronal holes (PCHs) appear about one year earlier th…
The absolute magnitude of K0V stars from Hipparcos data using an analytical treatment of the Malmquist bias
Butkevich, A. G.; Teerikorpi, P.; Berdyugin, A. V.
We calculate the average absolute magnitude for Hipparcos single K0V stars, using a theoretical curve for the distance-dependent Malmquist bias in the data. This method is shown to be well applicable to stellar data with good parallaxes and gives results in agreement with a previous study that used another treatment of the bias developed in extrag…
Reply to comment by M. L. Kaiser et al. on ``Rotation rate of Saturn's interior from magnetic field observations''
Dougherty, Michele K.; Russell, Christopher T.; Smith, Edward J. +1 more
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Vigorous star formation in a bulge-dominated extremely red object at z= 1.34
Simpson, Chris; Cotter, Garret; Bolton, Rosemary C.
We present near-infrared (near-IR) spectroscopy of three extremely red objects (EROs) using the OHS/CISCO spectrograph at the Subaru Telescope. One target exhibits a strong emission line, which we identify as Hα at z= 1.34. Using new and existing ground-based optical and near-IR imaging, and archival Hubble Space Telescope imaging, we argue that t…