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A search for polycyclic aromatic hydrocarbons over the Martian South Polar Residual Cap
Muller, J. -P.; Sidiropoulos, P.; Campbell, J. D.
We present our research on compositional mapping of the Martian South Polar Residual Cap (SPRC), especially the detection of organic signatures within the dust content of the ice, based on hyperspectral data analysis. The SPRC is the main region of interest for this investigation, because of the unique CO2 ice sublimation features that …
RR Lyrae variables in M31 and its satellites: an analysisof the galaxy's population
Sarajedini, Ata; Tanakul, Nahathai
We present an analysis of M31 RR Lyrae stars in six different fields using archival imaging from the Hubble Space Telescope. Published data for M31, M33, and several M31 dwarf spheroidal galaxies are also used to study the global properties of RR Lyrae in these systems. From the properties of RR Lyrae stars, we found that the majority of M31 and M…
Properties of the HPS-ICME-CIR Interaction Event of 9-10 September 2011
Morgan, Huw; Al-Shakarchi, Duraid A.
During 9-10 September 2011 the ACE, Wind, and SOHO spacecraft measured the complex interaction between an interplanetary coronal mass ejection (ICME) and a corotating interaction region (CIR) associated with the heliospheric sector boundary. Except for a few short periods, the suprathermal electrons are unidirectional, suggesting that the ICME mag…
The Embedded Ring-like Feature and Star Formation Activities in G35.673-00.847
Dewangan, L. K.; Ojha, D. K.; Devaraj, R.
We present a multiwavelength study to probe the star formation (SF) process in the molecular cloud linked with the G35.673-00.847 site (hereafter MCG35.6), which is traced in a velocity range of 53-62 km s-1. Multiwavelength images reveal a semi-ring-like feature (associated with ionized gas emission) and an embedded face-on ring-like f…
The cosmological analysis of X-ray cluster surveys. IV. Testing ASpiX with template-based cosmological simulations
Pierre, M.; Faccioli, L.; Clerc, N. +5 more
Context. This paper is the fourth of a series evaluating the ASpiX cosmological method, based on X-ray diagrams, which are constructed from simple cluster observable quantities, namely: count rate (CR), hardness ratio (HR), core radius (rc), and redshift.
Aims: Following extensive tests on analytical toy catalogues (Paper III), we …
Closing in on the large-scale CMB power asymmetry
Moss, A.; Scott, D.; Contreras, D. +2 more
Measurements of the cosmic microwave background (CMB) temperature anisotropies have revealed a dipolar asymmetry in power at the largest scales, in apparent contradiction with the statistical isotropy of standard cosmological models. The significance of the effect is not very high, and is dependent on a posteriori choices. Nevertheless, a number o…
Small field models with gravitational wave signature supported by CMB data
Wolfson, Ira; Brustein, Ramy
Combined Instrumentation Package COMARS+ for the ExoMars Schiaparelli Lander
Gülhan, Ali; Thiele, Thomas; Siebe, Frank +1 more
In order to measure aerothermal parameters on the back cover of the ExoMars Schiaparelli lander the instrumentation package COMARS+ was developed by DLR. Consisting of three combined aerothermal sensors, one broadband radiometer sensor and an electronic box the payload provides important data for future missions. The aerothermal sensors called COM…
A new method to identify flux ropes in space plasmas
He, Jiansen; Yuan, Zhigang; Yu, Xiongdong +10 more
Flux ropes are frequently observed in the space plasmas, such as solar wind, planetary magnetosphere and magnetosheath etc., and play an important role in the reconnection process and mass and flux transportation. One usually uses bipolar signature and strong core field to identify the flux ropes. We propose here one new method to identify flux ro…
The surface magnetic activity of the weak-line T Tauri stars TWA 9A and V1095 Sco
Donati, J. -F.; Hussain, G. A. J.; Wright, D. +5 more
We present a detailed analysis of high-resolution spectropolarimetric observations of the weak-line T Tauri stars (wTTSs) TWA 9A and V1095 Sco as part of a wider survey of magnetic properties and activity in weak-line T Tauri stars, called MaTYSSE (Magnetic Topologies of Young Stars and the Survival of close-in giant Exoplanets). Our targets have …