Search Publications
Origin of the Galactic Diffuse X-Ray Emission: Iron K-shell Line Diagnostics
Koyama, Katsuji; Nobukawa, Masayoshi; Uchiyama, Hideki +2 more
This paper reports detailed K-shell line profiles of iron (Fe) and nickel (Ni) of the Galactic Center X-ray Emission (GCXE), Galactic Bulge X-ray Emission (GBXE), Galactic Ridge X-ray Emission (GRXE), magnetic Cataclysmic Variables (mCVs), non-magnetic Cataclysmic Variables (non-mCVs), and coronally Active Binaries (ABs). For the study of the orig…
Propagation of small size magnetic holes in the magnetospheric plasma sheet
Zhang, H.; Hamrin, M.; Rème, H. +19 more
Magnetic holes (MHs), characteristic structures where the magnetic field magnitude decreases significantly, have been frequently observed in space plasmas. Particularly, small size magnetic holes (SSMHs) which the scale is less than or close to the proton gyroradius are recently detected in the magnetospheric plasma sheet. In this study of Cluster…
UV to IR Luminosities and Dust Attenuation Determined from ~4000 K-selected Galaxies at 1 < z < 3 in the ZFOURGE Survey
Papovich, Casey; Dickinson, Mark; Inami, Hanae +22 more
We build a set of composite galaxy spectral energy distributions (SEDs) by de-redshifting and scaling multi-wavelength photometry from galaxies in the ZFOURGE survey, covering the CDFS, COSMOS, and UDS fields. From a sample of ∼4000 Ks-band selected galaxies, we define 38 composite galaxy SEDs that yield continuous low-resolution spectr…
The Roll-over of Heliospheric Neutral Hydrogen below 100 eV: Observations and Implications
Wurz, P.; McComas, D. J.; Fuselier, S. A. +8 more
We present an improved analysis of the energy spectrum of energetic neutral hydrogen from the heliosheath observed with the IBEX-Lo sensor on the Interstellar Boundary EXplorer from the years 2009 to 2012. This analysis allows us to study the lowest energies between 10 and 100 eV although various background sources are more intense than the target…
Leveraging 3D-HST Grism Redshifts to Quantify Photometric Redshift Performance
Weiner, Benjamin J.; van Dokkum, Pieter G.; Franx, Marijn +10 more
We present a study of photometric redshift accuracy in the 3D-HST photometric catalogs, using 3D-HST grism redshifts to quantify and dissect trends in redshift accuracy for galaxies brighter than JH IR > 24 with an unprecedented and representative high-redshift galaxy sample. We find an average scatter of 0.0197 ± 0.0003(1 + z) in th…
Topographic measurements of slope streaks on Mars
Head, James W.; Brusnikin, Eugene S.; Kreslavsky, Mikhail A. +4 more
Slope streaks are enigmatic, actively forming albedo features occurring on slopes in high-albedo, low-thermal-inertia, dust-rich equatorial regions on Mars. They are a specifically martian phenomenon with no direct analogs on the Earth. Their morphology suggests that the streaks are initiated at their upslope tips and propagate down to their termi…
A search for X-ray reprocessing echoes in the power spectral density functions of AGN
Papadakis, I. E.; Emmanoulopoulos, D.; Dovčiak, M. +3 more
We present the results of a detailed study of the X-ray power spectral density (PSD) functions of 12 X-ray bright AGN, using almost all the archival XMM-Newton data. The total net exposure of the EPIC-pn light curves is larger than 350 ks in all cases (and exceeds 1 Ms in the case of 1H 0707-497). In a physical scenario in which X-ray reflection o…
Asteroseismic versus Gaia distances: A first comparison
De Ridder, J.; Eyer, L.; Aerts, C. +1 more
Context. The Kepler space mission led to a large number of high-precision time series of solar-like oscillators. Using a Bayesian analysis that combines asteroseismic techniques and additional ground-based observations, the mass, radius, luminosity, and distance of these stars can be estimated with good precision. This has given a new impetus to t…
Tracing p-mode Waves from the Photosphere to the Corona in Active Regions
Zhao, Junwei; Chen, Ruizhu; Felipe, Tobías +1 more
Atmosphere above sunspots is abundant with different types of waves. Among these waves are running penumbral waves in the chromosphere, quasi-periodic oscillations in the lower coronal loops, and recently reported running waves in sunspots’ photosphere, all of which were interpreted as magnetoacoustic waves by some authors. Are these waves in diff…
Planck intermediate results. XLI. A map of lensing-induced B-modes
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +178 more
The secondary cosmic microwave background (CMB) B-modes stem from the post-decoupling distortion of the polarization E-modes due to the gravitational lensing effect of large-scale structures. These lensing-induced B-modes constitute both a valuable probe of the dark matter distribution and an important contaminant for the extraction of the primary…