18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of California, BerkeleyUS1.3k papers
- Goddard Space Flight CenterUS457 papers
- California Institute of TechnologyUS379 papers
- Centre National de la Recherche ScientifiqueFR367 papers
- Lawrence Berkeley National LaboratoryUS262 papers
- Jet Propulsion LaboratoryUS260 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR240 papers
- National Institute for AstrophysicsIT239 papers
- University of CambridgeGB208 papers
- Imperial College LondonGB203 papers
- Institut de Recherche en Astrophysique et PlanétologieFR195 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR181 papers
50 papers · 1 filter
New 3-D gas density maps of NaI and CaII interstellar absorption within 300pc
Barry Y. Welsh, Rosine Lallement, Jean-Luc Vergely +1
We present new high resolution (R>50,000) absorption measurements of the NaI doublet (5889 - 5895A) along 482 nearby sight-lines, in addition to 807 new measurements of the CaII K…
The California Planet Survey II. A Saturn-Mass Planet Orbiting the M Dwarf Gl649
John Asher Johnson, Andrew W. Howard, Geoffrey W. Marcy +6
We report precise Doppler measurements of the nearby (d = 10.34 pc) M dwarf Gl649 that reveal the presence of a planet with a minimum mass Msini = 0.328 Mjup in an eccentric (e = 0…
C IV Emission-line Detection of the Supernova Remnant RCW 114
I. -J. Kim, K. -W. Min, K. -I. Seon +2
We report the detection of the C IV 1548, 1551 emission line in the region of the RCW 114 nebula using the FIMS/SPEAR data. The observed C IV line intensity indicates that RCW 114…
Inter-Comparison and Validation of Geant4 Photon Interaction Models
M. Augelli, M. Begalli, M. G. Pia +7
A R&D project, named Nano5, has been recently launched to study an architectural design in view of addressing new experimental issues related to particle transport in high energy p…
Recent Developments on PIXE Simulation with Geant4
M. G. Pia, G. Weidenspointner, M. Augelli +4
Particle induced X-ray emission (PIXE) is an important physical effect that is not yet adequately modelled in Geant4. This paper provides a critical analysis of the problem domain…
Geant4-related R&D for new particle transport methods
M. Augelli, M. Begalli, T. Evans +11
A R&D project has been launched in 2009 to address fundamental methods in radiation transport simulation and revisit Geant4 kernel design to cope with new experimental requirements…
Research in Geant4 electromagnetic physics design, and its effects on computational performance and quality assurance
M. Augelli, M. Begalli, S. Hauf +9
The Geant4 toolkit offers a rich variety of electromagnetic physics models; so far the evaluation of this Geant4 domain has been mostly focused on its physics functionality, while…
The complete spectrum of the neutron star X-ray binary 4U0614+091
S. Migliari, J. A. Tomsick, J. C. A. Miller-Jones +6
We observed the neutron star (NS) ultra-compact X-ray binary 4U0614+091 quasi-simultaneously in the radio band (VLA), mid-IR/IR (Spitzer/MIPS and IRAC), near-IR/optical (SMARTS), o…
Estimating Electric Fields from Vector Magnetogram Sequences
G. H. Fisher, B. T. Welsch, W. P. Abbett +1
Determining the electric field (E-field) distribution on the Sun's photosphere is essential for quantitative studies of how energy flows from the Sun's photosphere, through the cor…
Suzaku observation of IGR J16318-4848
L. Barragán, J. Wilms, K. Pottschmidt +4
We report on the first Suzaku observation of IGR J16318-4848, the most extreme example of a new group of highly absorbed X-ray binaries that have recently been discovered by the In…
Progress and Validation of Geant4 Based Radioactive Decay Simulation Using the Examples of Simbol-X and IXO
S. Hauf, M. Kuster, M. G. Pia +10
The anticipated high sensitivity and the science goals of the next generation X-ray space missions, like the International X-ray Observatory or Simbol-X, rely on a low instrumental…
On the Brightness and Waiting-time Distributions of a Type III Radio Storm observed by STEREO/WAVES
J. P. Eastwood, M. S. Wheatland, H. S. Hudson +5
Type III solar radio storms, observed at frequencies below approximately 16 MHz by space borne radio experiments, correspond to the quasi-continuous, bursty emission of electron be…
Truncation of the Inner Accretion Disk around a Black Hole at Low Luminosity
John A. Tomsick, Kazutaka Yamaoka, Stephane Corbel +3
Most black hole binaries show large changes in X-ray luminosity caused primarily by variations in mass accretion rate. An important question for understanding black hole accretion…
Evidence for Non-Linear Growth of Structure from an X-ray Selected Cluster Survey using a Novel Joint Analysis of the Chandra and XMM-Newton Archives
J. R. Peterson, J. G. Jernigan, R. R. Gupta +2
We present a large X-ray selected serendipitous cluster survey based on a novel joint analysis of archival Chandra and XMM-Newton data. The survey provides enough depth to reach cl…
Discovery of a new Soft Gamma Repeater: SGR J0418+5729
A. J. van der Horst, V. Connaughton, C. Kouveliotou +31
On 2009 June 5, the Gamma-ray Burst Monitor (GBM) onboard the Fermi Gamma-ray Space Telescope triggered on two short, and relatively dim bursts with spectral properties similar to…
The nature of the X-ray binary IGR J19294+1816 from INTEGRAL, RXTE, and Swift observations
J. Rodriguez, J. A. Tomsick, A. Bodaghee +4
We report the results of a high-energy multi-instrumental campaign with INTEGRAL, RXTE, and Swift of the recently discovered INTEGRAL source IGR J19294+1816. The Swift/XRT data all…
Discovery of a highly energetic pulsar associated with IGR J14003-6326 in a young uncataloged Galactic supernova remnant G310.6-1.6
M. Renaud, V. Marandon, E. V. Gotthelf +6
We report the discovery of 31.18 ms pulsations from the INTEGRAL source IGR J14003-6326 using the Rossi X-ray Timing Explorer (RXTE). This pulsar is most likely associated with the…
Signatures of Interchange Reconnection: STEREO, ACE and Hinode Observations Combined
D. Baker, A. P. Rouillard, L. van Driel-Gesztelyi +8
Combining STEREO, ACE and Hinode observations has presented an opportunity to follow a filament eruption and coronal mass ejection (CME) on the 17th of October 2007 from an active…
Far-UV sensitivity of the Cosmic Origins Spectrograph
Stephan R. McCandliss, Kevin France, Steven Osterman +3
We demonstrate that the G140L segment B channel of the Cosmic Origins Spectrograph (COS) recently installed on the {\it Hubble Space Telescope (HST)} has an effective area consiste…
The infrared/X-ray correlation of GX 339-4: Probing hard X-ray emission in accreting black holes
M. Coriat, S. Corbel, M. M. Buxton +4
GX 339-4 has been one of the key sources for unravelling the accretion ejection coupling in accreting stellar mass black holes. After a long period of quiescence between 1999 and 2…
Following the 2008 outburst decay of the black hole candidate H1743-322 in X-ray and radio
P. G. Jonker, J. Miller-Jones, J. Homan +10
In this Paper we report on radio (VLA and ATCA) and X-ray (RXTE, Chandra and Swift) observations of the outburst decay of the transient black hole candidate H1743-322 in early 2008…
Comparison of Hinode/XRT and RHESSI detection of hot plasma in the non-flaring solar corona
F. Reale, J. M. McTiernan, P. Testa
We compare observations of the non-flaring solar corona made simultaneously with Hinode/XRT and with RHESSI. The analyzed corona is dominated by a single active region on 12 Novemb…
Improved Constraints on the Gravitational Lens Q0957+561. II. Strong Lensing
Ross Fadely, Charles R. Keeton, Reiko Nakajima +1
We present a detailed strong lensing analysis of an HST/ACS legacy dataset for the first gravitational lens, Q0957+561. With deep imaging we identify 24 new strongly lensed feature…
The Transit Ingress and the Tilted Orbit of the Extraordinarily Eccentric Exoplanet HD 80606b
Joshua N. Winn, Andrew W. Howard, John Asher Johnson +18
We present the results of a transcontinental campaign to observe the 2009 June 5 transit of the exoplanet HD 80606b. We report the first detection of the transit ingress, revealing…