Search Publications
Missions
Journals
Publication Years
Optical Properties of Amorphous Alumina Dust in the Envelopes around O-Rich AGB Stars
Suh, Kyung-Won
We investigate optical properties of amorphous alumina (Al_2O_3) dust grains in the envelopes around O-rich asymptotic giant branch (AGB) stars considering the laboratory measured optical data. We derive the optical constants of amorphous alumina in a wide wavelength range that satisfy the Kramers-Kronig relation and reproduce the laboratory measu…
The XMM-Newton spectra of the 2012 outburst of the black hole candidate 4U 1630-47 revisited
Méndez, Mariano; Wang, Yanan
Recent XMM-Newton observations of the black hole candidate 4U 1630-47 during the 2012 outburst revealed three relativistically Doppler-shifted emission lines that were interpreted as arising from baryonic matter in the jet of this source. Here, we reanalyse those data and find an alternative model that, with less free parameters than the model wit…
AKARI far-infrared maps of the zodiacal dust bands
Nakagawa, Takao; Doi, Yasuo; Takita, Satoshi +6 more
Zodiacal emission is thermal emission from interplanetary dust. Its contribution to the sky brightness is non-negligible in the region near the ecliptic plane, even in the far-infrared (far-IR) wavelength regime. We analyze zodiacal emission observed by the AKARI far-IR all-sky survey, which covers 97% of the entire sky at arcminute-scale resoluti…
A Phase-Gradient-Autofocus Algorithm for the Recovery of MARSIS Subsurface Data
Picardi, G.; Seu, R.; Restano, M.
Lunar Occultations of 18 Stellar Sources from the 2.4 m Thai National Telescope
Dhillon, V. S.; Marsh, T. R.; Richichi, A. +3 more
We report further results from the program of lunar occultation (LO) observations started at the 2.4 m Thai National Telescope (TNT) in 2014. We have recorded LO events of 18 stellar sources, leading to the detection of four angular diameters and two binary stars. With two exceptions, these are first-time determinations. We could resolve angular d…
Asymmetrical response of dayside ion precipitation to a large rotation of the IMF
Berchem, J.; Richard, R. L.; Escoubet, C. P. +2 more
We have carried out global magnetohydrodynamics (MHD) simulations together with large-scale kinetic simulations to investigate the response of the dayside magnetospheric ion precipitation to a large rotation (135°) of the interplanetary magnetic field (IMF). The study uses simplified global MHD model (no dipole tilt and constant ionospheric conduc…
Combining strong lensing and dynamics in galaxy clusters: integrating MAMPOSSt within LENSTOOL. I. Application on SL2S J02140-0535
Gastaldello, F.; Jullo, E.; Biviano, A. +12 more
Context. The mass distribution in galaxy clusters and groups is an important cosmological probe. It has become clear in recent years that mass profiles are best recovered when combining complementary probes of the gravitational potential. Strong lensing (SL) is very accurate in the inner regions, but other probes are required to constrain the mass…
Solar irradiance observations with PREMOS filter radiometers on the PICARD mission: In-flight performance and data release
Egorova, T.; Schmutz, W.; Rozanov, E. +22 more
Context. The PREcision Monitoring Sensor (PREMOS) is a solar radiometer on board the French PICARD mission that was launched in June 2010 and decommissioned in April 2014.
Aims: The PREMOS radiometer obtains solar irradiance measurements in specific spectral windows in the UV, visible, and near-infrared. In this paper, the PREMOS data and cal…
Extensive X-ray variability studies of NGC 7314 using long XMM-Newton observations
Papadakis, I. E.; Vaughan, S.; Emmanoulopoulos, D. +1 more
We present a detailed X-ray variability study of the low-mass active galactic nuclei (AGN) NGC 7314 using the two newly obtained XMM-Newton observations (140 and 130 ks), together with two archival data sets of shorter duration (45 and 84 ks). The relationship between the X-ray variability characteristics and other physical source properties (such…
Peculiar lapse of periodic eclipsing event at low-mass X-ray binary GRS 1747-312 during Suzaku observation in 2009
Dotani, Tadayasu; Maeda, Yoshitomo; Mori, Hideyuki +6 more
GRS 1747-312 is a neutron star low-mass X-ray binary in the globular cluster Terzan 6, located at a distance of 9.5 kpc from the Earth. During its outbursts, periodic eclipses were known to occur. Observations for the outbursts were performed with Chandra in 2004 and Swift in 2013. XMM-Newton observed its quiescent state in 2004. In addition, when…