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The IRAS 08589-4714 star-forming region
Gómez, M.; Rubio, M.; Cappa, C. E. +3 more
We present an analysis of the IRAS 08589-4714 star-forming region. This region harbors candidate young stellar objects identified in the WISE and Herschel images using color index criteria and spectral energy distributions (SEDs). The SEDs of some of the infrared sources and the 70 µm radial intensity profile of the brightest source are mode…
Rotational Motion of the Spacecraft Philae During Landing on Comet 67P/Churyumov-Gerasimenko
Baranyai, Tamás; Várkonyi, Péter L.; Balázs, András
Hyperactivity in 103P/Hartley 2: Chunks from the sub-surface in Type IIa jet regions
Belton, Michael J. S.
We analyze the observed radial distribution of column densities of water-ice particulates embedded in the primary jet region (J1) of 103P's inner coma at altitudes between 439 and 1967 m (Protopapa et al., 2014, Icarus 238, 191-204) and determine the speed and acceleration of particles and their mass-flow within the filaments of the jet…
The emission-line regions in the nucleus of NGC 1313 probed with GMOS-IFU: a supergiant/hypergiant candidate and a kinematically cold nucleus
Steiner, J. E.; Menezes, R. B.
NGC 1313 is a bulgeless nearby galaxy, classified as SB(s)d. Its proximity allows high spatial resolution observations. We performed the first detailed analysis of the emission-line properties in the nuclear region of NGC 1313, using an optical data cube obtained with the Gemini Multi-object Spectrograph. We detected four main emitting areas, thre…
Testing models of quasar hosts with strong gravitational lensing by quasar hosts
Cen, Renyue; Safarzadeh, Mohammadtaher
We perform a statistical analysis of strong gravitational lensing by quasar hosts of background galaxies, in the two competing models of dark matter haloes of quasars, halo occupation distribution (HOD) and Cen and Safarzadeh (CS) models. Utilizing the BolshoiP simulation, we demonstrate that strong gravitational lensing provides a potentially ver…
Spatial Offsets in Flare-CME Current Sheets
Giordano, Silvio; Raymond, John C.; Ciaravella, Angela
Magnetic reconnection plays an integral part in nearly all models of solar flares and coronal mass ejections (CMEs). The reconnection heats and accelerates the plasma, produces energetic electrons and ions, and changes the magnetic topology to form magnetic flux ropes and to allow CMEs to escape. Structures that appear between flare loops and CME …
Cosmic X-ray surveys of active galactic nuclei: The synergy between X-ray and infrared observations
Alexander, D. M.
We briefly review the synergy between X-ray and infrared observations for Active Galactic Nuclei (AGNs) detected in cosmic X-ray surveys, primarily with XMM-Newton, Chandra, and NuSTAR. We focus on two complementary aspects of this X-ray-infrared synergy (1) the identification of the most heavily obscured AGNs and (2) the connection between star f…
SXP 7.92: a recently rediscovered Be/X-ray binary in the Small Magellanic Cloud, viewed edge on
D'Elia, V.; Udalski, A.; Esposito, P. +4 more
We present a detailed optical and X-ray study of the 2013 outburst of the Small Magellanic Cloud Be/X-ray binary SXP 7.92, as well as an overview of the last 18 years of observations from OGLE (Optical Gravitational Lensing Experiment), RXTE, Chandra and XMM-Newton. We revise the position of this source to RA(J2000) = 00:57:58.4, Dec(J2000) = -72:…
Suzaku and Chandra observations of CIZA J1700.8-3144, a cluster of galaxies in the Zone of Avoidance
Maeda, Yoshitomo; Mori, Hideyuki; Nakazawa, Kazuhiro +2 more
We present the Chandra and Suzaku observations of 1RXS J170047.8-314442, located towards the Galactic bulge, to reveal a wide-band (0.3-10 keV) X-ray morphology and spectrum of this source. With the Chandra observation, no point source was found at the position of 1RXS J170047.8-314442. Instead, we revealed the presence of diffuse X-ray emission, …
A likely detection of a local interplanetary dust cloud passing near the Earth in the AKARI mid-infrared all-sky map
Onaka, T.; Kaneda, H.; Ishihara, D. +8 more
Context. We are creating the AKARI mid-infrared all-sky diffuse maps. Through a foreground removal of the zodiacal emission, we serendipitously detected a bright residual component whose angular size is about 50° × 20° at a wavelength of 9 µm.
Aims: We investigate the origin and the physical properties of the residual component.
Me…