Search Publications
Moreton and EUV Waves Associated with an X1.0 Flare and CME Ejection
Long, David M.; Mandrini, Cristina H.; Cremades, Hebe +3 more
A Moreton wave was detected in active region (AR) 12017 on 29 March 2014 with very high cadence with the H-Alpha Solar Telescope for Argentina (HASTA) in association with an X1.0 flare (SOL2014-03-29T17:48). Several other phenomena took place in connection with this event, such as low-coronal waves and a coronal mass ejection (CME). We analyze the…
The Inner Structure of the TW Hya Disk as Revealed in Scattered Light
Debes, John H.; Schneider, Glenn; Jang-Condell, Hannah
We observe a significant change in the TW Hya disk interior to 40 au via archival unpolarized multi-wavelength Hubble Space Telescope/STIS and NICMOS images with an inner working angle of 0.″4 (22 au). Our images show the outer edge of a clearing at every wavelength with similar behavior, demonstrating that the feature is structural, rather than d…
Push it to the limit: Local Group constraints on high-redshift stellar mass functions for M⋆ ≥ 105 M⊙
Weisz, Daniel R.; Bullock, James S.; Boylan-Kolchin, Michael +1 more
We constrain the evolution of the galaxy stellar mass function from 2 < z < 5 for galaxies with stellar masses as low as 105 M⊙ by combining star formation histories of Milky Way satellite galaxies derived from deep Hubble Space Telescope observations with merger trees from the ELVIS suite of N-body simulations. This ap…
Using XMM-Newton to study the energy-dependent variability of H 1743-322 during its 2014 outburst
Stiele, H.; Yu, W.
Black hole transients evolve during bright outbursts, showing distinct changes in their spectral and variability properties. These changes are interpreted as evidence for changes in the accretion flow and in the X-ray-emitting regions. We obtained an anticipated XMM-Newton Target of Opportunity observation of H 1743-322 during its outburst in 2014…
Orion's Veil. IV. H2 Excitation and Geometry
Abel, N. P.; O'Dell, C. R.; Ferland, G. J. +1 more
The foreground Veil of material that lies in front of the Orion Nebula is the best studied sample of the interstellar medium because we know where it is located, how it is illuminated, and the balance of thermal and magnetic energy. In this work, we present high-resolution STIS observations toward the Trapezium, with the goal of better understandi…
Automated localisation of Mars rovers using co-registered HiRISE-CTX-HRSC orthorectified images and wide baseline Navcam orthorectified mosaics
Tao, Yu; Muller, Jan-Peter; Poole, William
We present a wide range of research results in the area of orbit-to-orbit and orbit-to-ground data fusion, achieved within the EU-FP7 PRoVisG project and EU-FP7 PRoViDE project. We focus on examples from three Mars rover missions, i.e. MER-A/B and MSL, to provide examples of a new fully automated offline method for rover localisation. We start by …
The Planck-ATCA Co-eval Observations project: analysis of radio source properties between 5 and 217 GHz
De Zotti, Gianfranco; Bonaldi, Anna; Lopez-Caniego, Marcos +3 more
The Planck-ATCA Co-eval Observations (PACO) project has yielded observations of 464 sources with the Australia Telescope Compact Array (ATCA) between 4.5 and 40 GHz. The main purpose of the project was to investigate the spectral properties of mm-selected radio sources at frequencies below and overlapping with the ESA's Planck satellite frequency …
Characterization of artifacts introduced by the empirical volcano-scan atmospheric correction commonly applied to CRISM and OMEGA near-infrared spectra
Arvidson, R. E.; Morris, R. V.; Mustard, J. F. +8 more
The empirical 'volcano-scan' atmospheric correction is widely applied to martian near infrared CRISM and OMEGA spectra between ∼1000 and ∼2600 nm to remove prominent atmospheric gas absorptions with minimal computational investment. This correction method employs division by a scaled empirically-derived atmospheric transmission spectrum that is ge…
Orbital evolution and search for eccentricity and apsidal motion in the eclipsing HMXB 4U 1700-37
Paul, Biswajit; Islam, Nazma
In the absence of detectable pulsations in the eclipsing high-mass X-ray binary 4U 1700-37, the orbital period decay is necessarily determined from the eclipse timing measurements. We have used the earlier reported mid-eclipse time measurements of 4U 1700-37 together with the new measurements from long-term light curves obtained with the all sky m…
Relationship between the CMB, Sunyaev-Zel'dovich cluster counts, and local Hubble parameter measurements in a simple void model
Oguri, Masamune; Ichiki, Kiyotomo; Yoo, Chul-Moon
The discrepancy between the amplitudes of matter fluctuations inferred from Sunyaev-Zel'dovich (SZ) cluster number counts and the measurement of temperature and polarization anisotropies of the cosmic microwave background (CMB) measured by the Planck satellite can be reconciled if the local universe is embedded in an underdense region as shown by …