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Characterizing Solar Energetic Particle Event Profiles with Two-Parameter Fits
Kahler, Stephen W.; Ling, Alan G.
The intensity-time profiles of solar energetic (E >10 MeV) particle (SEP) events observed at 1 AU reflect a number of physical processes involving solar injection and interplanetary transport. In addition to energy spectral and composition studies, SEP intensity-time profiles are the basis for diagnostic timescales needed for describing and mod…
False outliers of the Ep,i - Eiso correlation?
Della Valle, M.; Götz, D.; Amati, L. +3 more
Context. In the context of an in-depth understanding of GRBs and their possible use in cosmology, some important correlations between the parameters that describe their emission have been discovered, among which the "Ep,i - Eiso" correlation is the most studied. Because of this, it is fundamental to shed light on the peculiar…
The SAMI Galaxy Survey: kinematics of dusty early-type galaxies
Groves, B. A.; Konstantopoulos, I. S.; Cortese, L. +19 more
Recently, large samples of visually classified early-type galaxies (ETGs) containing dust have been identified using space-based infrared observations with the Herschel Space Telescope. The presence of large quantities of dust in massive ETGs is peculiar as X-ray haloes of these galaxies are expected to destroy dust in ∼107 yr (or less)…
Impact of the latest measurement of Hubble constant on constraining inflation models
Zhang, Xin
We investigate how the constraint results of inflation models are affected by considering the latest local measurement of $H_0$ in the global fit. We use the observational data, including the Planck CMB full data, the BICEP2 and Keck Array CMB B-mode data, the BAO data, and the latest measurement of Hubble constant, to constrain the $\Lambda$CDM+$…
Searching for luminous absorbed sources in the WISE AGN catalogue
Georgantopoulos, I.; Carrera, F. J.; Mountrichas, G. +6 more
Mid-infrared (IR) colour selection techniques have proved to be very efficient in finding active galactic nuclei (AGN). This is because the AGN heats the surrounding dust producing warm mid-IR colours. Using the Wide-field Infrared Survey Explorer 3.6, 4.5 and 12 µm colours, the largest sample of IR selected AGN has already been produced con…
Solar signatures and eruption mechanism of the August 14, 2010 coronal mass ejection (CME)
Poedts, Stefaan; Berghmans, David; Seaton, Daniel B. +2 more
On August 14, 2010 a wide-angled coronal mass ejection (CME) was observed. This solar eruption originated from a destabilized filament that connected two active regions and the unwinding of this filament gave the eruption an untwisting motion that drew the attention of many observers. In addition to the erupting filament and the associated CME, se…
Extremely Red Submillimeter Galaxies: New z ≳ 4-6 Candidates Discovered using ALMA and Jansky VLA
Ivison, R. J.; Tamura, Yoichi; Kohno, Kotaro +18 more
We present the detailed characterization of two extremely red submillimeter galaxies (SMGs), ASXDF1100.053.1 and 231.1, with the Atacama Large Millimeter/submillimeter Array (ALMA) and the Jansky Very Large Array. These SMGs were originally selected using AzTEC at 1100 µm, and are observed by Herschel to be faint at 100-500 µm. Their (…
Integrated and resolved dust attenuation in clumpy star-forming galaxies at 0.07 < z < 0.14
Glazebrook, Karl; Obreschkow, Danail; Abraham, Roberto +7 more
Dust attenuation in galaxies has been extensively studied nearby, however, there are still many unknowns regarding attenuation in distant galaxies. We contribute to this effort using observations of star-forming galaxies in the redshift range z = 0.05-0.15 from the DYnamics of Newly Assembled Massive Objects (DYNAMO) survey. Highly star-forming DY…
Miniature loops in the solar corona
Barczynski, K.; Peter, H.; Savage, S. L.
Context. Magnetic loops filled with hot plasma are the main building blocks of the solar corona. Usually they have lengths of the order of the barometric scale height in the corona that is 50 Mm.
Aims: Previously it has been suggested that miniature versions of hot loops exist. These would have lengths of only 1 Mm barely protruding from the …
The Characteristics of Thin Magnetic Flux Tubes in the Lower Solar Atmosphere Observed by Hinode/SOT in the G band and in Ca II H Bright Points
Xiong, Jianping; Yang, Yunfei; Jin, Chunlan +5 more
Photospheric bright points (PBPs) and chromospheric bright points (CBPs) reflect the cross sections of magnetic flux tubes at different heights of the lower solar atmosphere. We aim to study the fine 3D structures and transportation dynamics of the magnetic flux tubes using G-band and simultaneous Ca II H image-series from the Solar Optical Telesc…