Search Publications
Magnetic field investigations during ROSETTA's 2867 Šteins flyby
Richter, I.; Glassmeier, K. H.; Carr, C. M. +3 more
During the 2867 Šteins flyby of the ROSETTA spacecraft on September 5, 2008 magnetic field measurements have been made with both the RPC orbiter magnetometer and the ROMAP lander magnetometer. These combined magnetic field measurements allow a detailed examination of any magnetic signatures caused either directly by the asteroid or indirectly by Š…
Vestige of the Star Cluster Burst in M51
Hwang, Narae; Lee, Myung Gyoon
We present a study of the star cluster formation in M51 based on the image data taken with Advanced Camera for Surveys (ACS) and Wide Field Planetary Camera 2 (WFPC2) of Hubble Space Telescope (HST). We have derived the star cluster formation rate using the ages and masses of about 2000 star clusters estimated by comparing photometric data (F336W,…
Herschel FIR counterparts of selected Lyα emitters at z ~ 2.2. Fast evolution since z ~ 3 or missed obscured AGNs?
Berta, S.; Magnelli, B.; Nordon, R. +58 more
Lyα emitters (LAEs) are seen everywhere in the redshift domain from local to z ~ 7. Far-infrared (FIR) counterparts of LAEs at different epochs could provide direct clues on dust content, extinction, and spectral energy distribution (SED) for these galaxies. We search for FIR counterparts of LAEs that are optically detected in the GOODS-North fiel…
XMM-Newton detection of the supernova remnant G304.6+0.1 (Kes 17)
Combi, J. A.; Luque-Escamilla, P. L.; Romero, G. E. +6 more
Aims: We report the first detailed X-ray study of the supernova remnant (SNR) G304.6+0.1, achieved with the XMM-Newton mission.
Methods: The powerful imaging capability of XMM-Newton was used to study the X-ray characteristics of the remnant at different energy ranges. The X-ray morphology and spectral properties were analyzed. In additt…
Search for High-energy Gamma-ray Emission from an Anomalous X-ray Pulsar, 4U 0142+61
Göǧüş, Ersin; Şaşmaz Muş, Sinem
Until 2004, anomalous X-ray pulsars (AXPs) were known as strong emitters of soft X-rays only (<10 keV). The discovery of hard X-ray component from AXPs provided important insight about their emission properties while it posed a serious challenge to explain its origin. The physical mechanism of the hard emission component has still not been full…
Parameters of the local warp of the stellar-gaseous galactic disk from the kinematics of Tycho-2 nearby red giant clump stars
Bobylev, V. V.
We analyze the three-dimensional kinematics of about 82 000 Tycho-2 stars belonging to the red giant clump (RGC). First, based on all of the currently available data, we have determined new, most probable components of the residual rotation vector of the optical realization of the ICRS/HIPPARCOS system relative to an inertial frame of reference, (…
Thickness of the Heliosheath, Return of the Pick-up Ions, and Voyager 1's Crossing the Heliopause
Hsieh, K. C.; Giacalone, J.; Hilchenbach, M. +3 more
Using results of remote sensing by energetic neutral atoms from IBEX, SOHO/HSTOF, and Cassini/INCA, in situ measurements of ~40-4000 keV protons in the heliosheath (HS) from Low Energy Charged Particle on Voyager 1 and Voyager 2, and outputs from numerical modeling of the termination shock, we estimate L, the characteristic thickness of the HS in …
Cassini imaging search rules out rings around Rhea
Hedman, Matthew M.; Burns, Joseph A.; Tiscareno, Matthew S. +1 more
We have conducted an intensive search using the Cassini ISS narrow-angle camera to identify any material that may orbit Rhea. Our results contradict an earlier and surprising inference that Rhea, the second-largest moon of Saturn, possesses a system of narrow rings embedded in a broad circum-satellite disk or cloud.
Surface-compositional properties of the Malea Planum region of the Circum-Hellas Volcanic Province, Mars
McCord, Thomas B.; HRSC Co-Investigator Team; Greeley, Ronald +10 more
We used Thermal Emission Spectrometer (TES), Thermal Emission Imaging System (THEMIS), High-Resolution Stereo Camera (HRSC), and Observatoire pour la Minéralogie, l'Eau, les Glaces et l'Activité (OMEGA) data to assess the physical and compositional properties of the Malea Planum portion of the Circum-Hellas Volcanic Province (CHVP). Our analysis o…
Does the X-ray emission of the luminous quasar RBS 1124 originate in a mildly relativistic outflowing corona?
Bianchi, S.; Vignali, C.; Piconcelli, E. +2 more
We have observed the luminous (L2-10keV ~= 6 × 1044 ergs-1) radio-quiet quasar RBS 1124 (z = 0.208) with Suzaku. We report the detection of a moderately broad iron (Fe) line and of a weak soft X-ray excess. The X-ray data are very well described by a simple model comprising a power-law X-ray continuum plus its refl…