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The Inside-out Growth of the Most Massive Galaxies at 0.3 < z < 0.9
Gladders, M. D.; Yee, H. K. C.; Yan, Renbin +7 more
We study the surface brightness profiles of a sample of brightest cluster galaxies (BCGs) with 0.3 < z < 0.9. The BCGs are selected from the first Red-sequence Cluster Survey and an X-ray cluster survey. The surface brightness profiles of the BCGs are measured using HST ACS images, and the majority of them can be well modeled by a single Sér…
A Delayed Transition to the Hard State for 4U 1630-47 at the End of its 2010 Outburst
Kaaret, Philip; Yamaoka, Kazutaka; Kalemci, Emrah +3 more
Here we report on Swift and Suzaku observations near the end of an outburst from the black hole transient 4U 1630-47 and Chandra observations when the source was in quiescence. 4U 1630-47 made a transition from a soft state to the hard state ~50 days after the main outburst ended. During this unusual delay, the flux continued to drop, and one Swif…
Infrared absorption by pure CO2 near 3340 cm-1: Measurements and analysis of collisional coefficients and line-mixing effects at subatmospheric pressures
Daneshvar, L.; Földes, T.; Buldyreva, J. +1 more
High resolution Fourier transform spectra of the 21102-00001 band of 12C16O2 near 3340 cm-1 have been recorded and analyzed to extract isolated-line intensities and collisional parameters, and first-order line-mixing coefficients. Voigt, hard-collision Rautian and Sobel'man, and quadratic-speed-dependent…
The case against large intensity fluctuations in the z ∼ 2.5 He II Lyα forest
McQuinn, Matthew; Worseck, Gabor
Previous studies of the 2.2 < z < 2.7 He II Lyα forest measured much larger ionizing background fluctuations than are anticipated theoretically. We re-analyse recent Hubble Space Telescope data from the two He II sightlines that have been used to make these measurements, HE 2347-4342 and HS 1700+6416, and find that the vast majority of the a…
A non-monotonic eddy diffusivity profile of Titan's atmosphere revealed by Cassini observations
Kammer, Joshua A.; Zhang, Xi; Li, Cheng +3 more
Recent measurements from the limb-view soundings of Cassini/CIRS and the stellar occultations from Cassini/UVIS revealed the complete vertical profiles of minor species (e.g., C2H2 and C2H4) from 100 to 1000 km in the atmosphere of Titan. In this study, we developed an inversion technique to retrieve the…
Transmission of large-amplitude ULF waves through a quasi-parallel shock at Venus
Zhang, Tielong; Wang, Shui; Huang, Can +4 more
There exist large-amplitude ultralow frequency (ULF) waves in the upstream region of a quasi-parallel shock, which are excited due to the reflected ions by the shock. These waves are then brought back to the shock by the solar wind, and at last they coalesce and merge with the shock. In this paper, with the magnetic field measurements from Venus E…
First experimental constraints on the disformally coupled Galileon model
Möller, A.; Astier, P.; Conley, A. +6 more
Aims: The Galileon model is a modified gravity model that can explain the late-time accelerated expansion of the Universe. In a previous work, we derived experimental constraints on the Galileon model with no explicit coupling to matter and showed that this model agrees with the most recent cosmological data. In the context of braneworld cons…
A phenomenological model of Io's UV aurora based on HST/STIS observations
Saur, Joachim; Roth, Lorenz; Feldman, Paul D. +2 more
We have carried out a comprehensive analysis of a large set of spatially resolved observations of Io's OI 1304 Å, OI] 1356 Å, SI 1479 Å and SI] 1900 Å aurora taken by the Space Telescope Imaging Spectrograph (STIS) of the Hubble Space Telescope (HST) between 1997 and 2001. We find that the variability of the observed morphologies can be solely exp…
Magnetic fluctuations embedded in dipolarization inside geosynchronous orbit and their associated selective acceleration of O+ ions
Kistler, L. M.; Miyashita, Y.; Keika, K. +7 more
We study magnetic fluctuations embedded in dipolarizations in the inner magnetosphere (a geocentric distance of ≤6.6 RE) and their associated ion flux changes, using the Engineering Test Satellite VIII and Active Magnetospheric Particle Tracer Explorers/CCE satellites. We select seven events of dipolarization that occur during the main …
Firm detection of a cyclotron resonance feature with Suzaku in the X-ray spectrum of GRO J1008-57 during a giant outburst in 2012
Makishima, Kazuo; Sasano, Makoto; Mihara, Tatehiro +3 more
We report on the firm detection of a cyclotron resonance scattering feature (CRSF) in the X-ray spectrum of the Be X-ray binary pulsar, GRO J1008-57, achieved by the Suzaku Hard X-ray Detector during a giant outburst which was detected by the MAXI Gas Slit Camera in 2012 November. The Suzaku observation was carried out on 2012 November 20, outburs…