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The Star Formation Rate and Metallicity of the Host Galaxy of the Dark GRB 080325 at z=1.78
Hashimoto, Tetsuya; Tanaka, Ichi; Ohta, Kouji +5 more
We present near-infrared spectroscopy of the host galaxy of the dark gamma-ray burst (GRB) 080325 using Subaru/Multi-Object Infrared Camera and Spectrograph. The obtained spectrum provides a clear detection of Hα emission and marginal [Nii]λ6584. The host is a massive (M* ∼ 1011 M⊙), dusty ({A}V∼ 1.2) st…
Kinematics of ICMEs/Shocks: Blast Wave Reconstruction Using Type-II Emissions
Aguilar-Rodriguez, E.; Corona-Romero, P.; Gonzalez-Esparza, J. A. +2 more
We present a physical methodology for reconstructing the trajectory of interplanetary shocks using Type-II radio emission data. This technique calculates the shock trajectory assuming that the disturbance propagates as a blast wave in the interplanetary medium. We applied this blast-wave reconstruction (BWR) technique to analyze eight fast Earth-d…
A non-minimally coupled potential for inflation and dark energy after Planck 2015: a comprehensive study
Eshaghi, Mehdi; Zarei, Moslem; Riazi, Nematollah +1 more
In this work we introduce a new plateau-like inflationary model including a quadratic scalar potential coupled non-minimally to gravity. This potential has a dominant constant energy density at early times which can realize successful inflation. It also includes an infinitesimal non-zero term V0 responsible for explaining dark energy wh…
New XMM-Newton observation of the thermally emitting isolated neutron star 2XMM J104608.7-594306
Motch, C.; Treves, A.; Turolla, R. +3 more
Context. The isolated neutron star (INS)
Propagation characteristics of young hot flow anomalies near the bow shock: Cluster observations
Dandouras, I.; Zhang, H.; Zong, Q. -G. +9 more
Based on Cluster observations, the propagation velocities and normal directions of hot flow anomaly (HFA) boundaries upstream the Earth's bow shock are calculated. Twenty-one young HFAs, which have clear leading and trailing boundaries, were selected, and multispacecraft timing method considering errors was employed for the investigation. Accordin…
Tensors, BICEP2 results, prior dependence, and dust
Liddle, Andrew R.; Parkinson, David; Cortês, Marina
We investigate the prior dependence on the inferred spectrum of primordial tensor perturbations, in light of recent results from BICEP2 and taking into account a possible dust contribution to polarized anisotropies. We highlight an optimized parametrization of the tensor power spectrum, and adoption of a logarithmic prior on its amplitude AT<…
Luminous Red Galaxies: Selection and Classification By Combining Optical and Infrared Photometry
Rao, Sandhya M.; Newman, Jeffrey A.; Prakash, Abhishek +1 more
We describe a new method of combining optical and infrared photometry to select luminous red galaxies (LRGs) at redshifts z\gt 0.6. We explore this technique using a combination of optical photometry from CFHTLS and Hubble Space Telescope, infrared photometry from the Wide-Field Infrared Survey Explorer satellite, and spectroscopic or photometric …
The Herschel/PACS view of the Cep OB2 region: Global protoplanetary disk evolution and clumpy star formation
Fang, Min; Henning, Thomas; Currie, Thayne +7 more
Context. The Cep OB2 region, with its two intermediate-aged clusters Tr 37 and NGC 7160, is a paradigm of sequential star formation and an ideal site for studies of protoplanetary disk evolution.
Aims: We use Herschel data to study the protoplanetary disks and the star formation history of the region.
Methods: Herschel/PACS observations …
The abundance of 28Si32S, 29Si32S, 28Si34S, and 30Si32S in the inner layers of the envelope of IRC+10216
Cernicharo, J.; Fonfría, J. P.; Richter, M. J. +3 more
We present high spectral resolution mid-IR observations of SiS towards the C-rich AGB star IRC+10216 carried out with the Texas Echelon-cross-Echelle Spectrograph mounted on the NASA Infrared Telescope Facility. We have identified 204 ro-vibrational lines of 28Si32S, 26 of 29Si32S, 20 of 28Si<…
Inflation that runs naturally: Gravitational waves and suppression of power at large and small scales
Kaplinghat, Manoj; Minor, Quinn E.
We point out three correlated predictions of the axion monodromy inflation model: the large amplitude of gravitational waves, the suppression of power on horizon scales and on scales relevant for the formation of dwarf galaxies. While these predictions are likely generic to models with oscillations in the inflaton potential, the axion monodromy mo…