Search Publications
Missions
Journals
Publication Years
The outburst of the X-ray nova GRS 1739-278 in September 2016
Sunyaev, R. A.; Grebenev, S. A.; Burenin, R. A. +3 more
During the scanning observations of the Galactic center region in late August-September 2016 we detected a new (third) outburst of the historical X-ray nova GRS 1739-278, a presumed black hole in a low-mass X-ray binary. This was reported in the Astronomer's Telegrams (Mereminskiy et al. 2016). In this paper we present the results of INTEGRAL and …
The Kepler Eclipsing Binary V2281 Cygni with Twin Stars
Koo, Jae-Rim; Hong, Kyeongsoo; Lee, Jae Woo
We present the physical properties of the eclipsing binary V2281 Cyg, which shows a light-time effect due to a supposed tertiary component from its eclipse timing variation according to the Kepler observations. The high-resolution spectra and BVR photometric data of the system were obtained at Bohyunsan Optical Astronomy Observatory and Mount Lemm…
Probing the cold and warm molecular gas in the Whirlpool Galaxy: Herschel SPIRE-FTS observations of the central region of M51 (NGC 5194)
Cooray, A.; De Looze, I.; Wu, R. +12 more
We present Herschel Spectral and Photometric Imaging Receiver (SPIRE)-Fourier Transform Spectrometer (FTS) intermediate-sampled mapping observations of the central ∼8 kpc (∼150 arcsec) of M51, with a spatial resolution of 40 arcsec. We detect four 12CO transitions (J = 4-3 to J = 7-6) and the [C I] 3P2-3…
Three-dimensional Aquila Rift: magnetized H I arch anchored by molecular complex
Nakanishi, Hiroyuki; Sofue, Yoshiaki
Three-dimensional structure of the Aquila Rift of magnetized neutral gas is investigated by analysing H I and CO line data. The projected distance on the Galactic plane of the H I arch of the Aquila Rift is r⊥ ∼ 250 pc from the Sun. The H I arch emerges at l ∼ 30°, reaches to altitudes as high as ∼500 pc above the plane at l ∼ 350°, and…
Infrared Morphology of Regions of Ionized Hydrogen
Wiebe, D. S.; Kirsanova, M. S.; Topchieva, A. P. +1 more
A search for infrared ring nebulae associated with regions of ionized hydrogen has been carried out. The New GPS Very Large Array survey at 20 cm forms the basis of the search, together with observations obtained with the Spitzer Space Telescope at 8 and 24 µm and the Herschel Space Telescope at 70 µm. Objects having ring-like morpholo…
The development of magnetic field line wander by plasma turbulence
Howes, Gregory G.; Bourouaine, Sofiane
Plasma turbulence occurs ubiquitously in space and astrophysical plasmas, mediating the nonlinear transfer of energy from large-scale electromagnetic fields and plasma flows to small scales at which the energy may be ultimately converted to plasma heat. But plasma turbulence also generically leads to a tangling of the magnetic field that threads t…
An infrared photometric and spectroscopic study of post-AGB stars
Janardhan, P.; Pandey, R.; Anandarao, B. G. +1 more
We present here Spitzer mid-infrared (IR) spectra and modelling of the spectral energy distribution (SED) of a selection of post-asymptotic giant branch (PAGB) stars. The mid-IR spectra of the majority of these sources showed spectral features such as polycyclic aromatic hydrocarbons (PAHs) and silicates in emission. Our results from SED modelling…
The shocked gas of the BHR71 outflow observed by Herschel: indirect evidence for an atomic jet
Podio, L.; Codella, C.; Ceccarelli, C. +7 more
Context. In the BHR71 region, two low-mass protostars IRS1 and IRS2 drive two distinguishable outflows. They constitute an ideal laboratory to investigate both the effects of shock chemistry and the mechanisms that led to their formation.
Aims: We aim to define the global morphology of the warm gas component of the BHR71 outflow and at modell…
CMEs' Speed, Travel Time, and Temperature: A Thermodynamic Approach
Flandes, Alberto; Lara, Alejandro; Durand-Manterola, Hector J. +2 more
Due to their important role in space weather, coronal mass ejections or CMEs have been thoroughly studied in order to forecast their speed and transit time from the Sun to the Earth. We present a thermodynamic analytical model that describes the dynamics of CMEs. The thermodynamic approach has some advantages with respect to the hydrodynamic appro…
The Phoenix galaxy as seen by NuSTAR
Harrison, F. A.; Stern, D.; Zhang, W. W. +18 more
Aims: We study the long-term variability of the well-known Seyfert 2 galaxy Mrk 1210 (also known as UGC 4203, or the Phoenix galaxy).
Methods: The source was observed by many X-ray facilities in the last 20 yr. Here we present a NuSTAR observation and put the results in the context of previously published observations.
Results: NuST…