Search Publications
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…
Physical Properties of Compact Star-forming Galaxies at z ∼ 2-3
Fang, Guanwen; Kong, Xu; Fan, Lulu +1 more
We present a study on the physical properties of compact star-forming galaxies (cSFGs) with M* ≥ 1010M⊙ and 2 ≤ z ≤ 3 in the COSMOS (Cosmic Evolution Survey) and GOODS-S (Great Observatories Origins Deep Survey South) fields. We find that massive cSFGs have a comoving number density of (1.0 ± 0.1) × 10-4…
Coronal Mass Ejections and the Solar Cycle Variation of the Sun's Open Flux
Sheeley, N. R., Jr.; Wang, Y. -M.
The strength of the radial component of the interplanetary magnetic field (IMF), which is a measure of the Sun’s total open flux, is observed to vary by roughly a factor of two over the 11 year solar cycle. Several recent studies have proposed that the Sun’s open flux consists of a constant or “floor” component that dominates at sunspot minimum, a…
H-ATLAS/GAMA and HeViCS - dusty early-type galaxies in different environments
Ivison, R. J.; De Looze, I.; Baes, M. +21 more
The Herschel Space Observatory has had a tremendous impact on the study of extragalactic dust. Specifically, early-type galaxies (ETG) have been the focus of several studies. In this paper, we combine results from two Herschel studies - a Virgo cluster study Herschel Virgo Cluster Survey (HeViCS) and a broader, low-redshift Herschel-Astrophysical …