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Dissecting the Hot Bubbles in LMC-N57 with XMM-Newton
Toalá, Jesús A.; Rosado, Margarita; Ramírez-Ballinas, Isidro +1 more
We present a study of the diffuse X-ray emission from the star-forming region LMC-N 57 in the Large Magellanic Cloud. We use archival XMM-Newton observations to unveil in detail the distribution of hot bubbles in this complex. X-ray emission is detected from the central superbubble (SB) DEM L 229, the supernova remnant (SNR) 0532-675, and the Wolf…
Observations of small-scale energetic events in the solar transition region: explosive events, UV bursts, and network jets
Li, Bo; Xia, Lidong; Huang, Zhenghua
In this paper, we review observational aspects of three common small-scale energetic events in the solar transition region (TR), namely TR explosive events, ultraviolet bursts and jets. These events are defined in either (both) spectral or (and) imaging data. The development of multiple instruments capable of observing the TR has allowed researche…
Bright clumps in the D68 ringlet near the end of the Cassini Mission
Hedman, M. M.
The D68 ringlet is the innermost narrow feature in Saturn's rings. Prior to 2014, the brightness of this ringlet did not vary much with longitude, but sometime in 2014 or 2015 a series of bright clumps appeared within D68. These clumps were up to four times brighter than the typical ringlet, occurred within a span of ∼ 120° in corotating longitude…
New composite supernova remnant toward HESS J1844-030?
Petriella, A.
Aims: HESS J1844-030 is a newly confirmed TeV source in the direction of the X-ray pulsar wind nebula (PWN) candidate G29.4+0.1 and the complex radio source G29.37+0.1, which is likely formed by the superposition of a background radio galaxy and a Galactic supernova remnant (SNR). Many scenarios have been proposed to explain the origin of HES…
X-Ray Monitoring of the Magnetar CXOU J171405.7-381031 in Supernova Remnant CTB 37B
Gotthelf, E. V.; Halpern, J. P.; Mori, K. +1 more
We present the results of our 8 yr X-ray monitoring campaign on CXOU J171405.7-381031, the magnetar associated with the faint supernova remnant (SNR) CTB 37B. It is among the youngest by inferred spin-down age, and most energetic in spin-down power of magnetars, and may contribute, at least partially, to the GeV and TeV emission coincident with th…
Smoothed Particle Inference Analysis of SNR DEM L71
Frank, Kari A.; Burrows, David N.; Panfichi, Aldo +2 more
Supernova remnants (SNRs) are complex, three-dimensional objects; properly accounting for this complexity when modeling the resulting X-ray emission presents quite a challenge and makes it difficult to accurately characterize the properties of the full SNR volume. We apply for the first time a novel analysis method called smoothed particle inferen…
A new fitting concept for the robust determination of Sérsic model parameters
Amarantidis, Stergios; Breda, Iris; Papaderos, Polychronis +1 more
Context. The Sérsic law (SL) offers a versatile, widely used functional form for the structural characterization of galaxies near and far. Whereas fitting this three-parameter function to galaxies with a genuine SL luminosity distribution (e.g., several local early-type galaxies-ETGs) yields a robust determination of the Sérsic exponent η and effe…
On the origin of the dramatic spectral variability of WPVS 007
Xue, Yongquan; Li, Junyao; Wang, Tinggui +2 more
We report the discovery of large-amplitude mid-infrared variabilities (MIR; ∼0.3 mag) in the Wide-field Infrared Survey Explorer W1 and W2 bands of the low-luminosity narrow-line Seyfert 1 galaxy WPVS 007, which exhibits prominent and varying broad-absorption lines (BALs) with blueshifted velocity up to {∼ } 14 000km s^{-1}. The observed significa…
VEXAS: VISTA EXtension to Auxiliary Surveys. Data Release 1. The southern Galactic hemisphere
Agnello, A.; Spiniello, C.
Context. We present the first public data release of the VISTA EXtension to Auxiliary Surveys (VEXAS), comprising nine cross-matched multi-wavelength photometric catalogues where each object has a match in at least two surveys.
Aims: Our aim is to provide spatial coverage that is as uniform as possible in the multi-wavelength sky and to provi…
Quasi-simultaneous INTEGRAL, SWIFT, and NuSTAR Observations of the New X-Ray Clocked Burster 1RXS J180408.9-342058
Fiocchi, M.; Ubertini, P.; Bazzano, A. +4 more
We report the quasi-simultaneous INTEGRAL, SWIFT, and NuSTAR observations showing spectral state transitions in the neutron star low-mass X-ray binary 1RXS J180408.9-342058 during its 2015 outburst. We present results of the analysis of high-quality broad energy band (0.8-200 keV) data in three different spectral states: high/soft, low/very-hard, …