Search Publications
Missions
Journals
Publication Years
Determining the Bulk Parameters of Plasma Electrons from Pitch-Angle Distribution Measurements
Verscharen, Daniel; Livadiotis, George; Owen, Christopher +3 more
First Images of the Protoplanetary Disk around PDS 201
Dong, Ruobing; Wagner, Kevin; Stone, Jordan +11 more
Scattered light imaging has revealed nearly a dozen circumstellar disks around young Herbig Ae/Be stars—enabling studies of structures in the upper disk layers as potential signs of ongoing planet formation. We present the first images of the disk around the variable Herbig Ae star PDS 201 (V* V351 Ori) and an analysis of the images and spectral e…
VLA and ALMA observations of the lensed radio-quiet quasar SDSS J0924+0219: a molecular structure in a 3 µJy radio source
Sluse, Dominique; Jackson, Neal; Stacey, Hannah +3 more
We present Karl G. Jansky Very Large Array (VLA) and Atacama Large Millimetre Array (ALMA) observations of SDSS J0924+0219, a z = 1.524 radio-quiet lensed quasar with an intrinsic radio flux density of about 3 $\, \mu$ Jy. The four lensed images are clearly detected in the radio continuum and the CO(5-4) line, whose centroid is at z = 1.5254 ± 0.0…
The dynamical state of Abell 2399: a bullet-like cluster
Moretti, A.; Vulcani, B.; Lopes, P. A. A. +8 more
While there are many ways to identify substructures in galaxy clusters using different wavelengths, each technique has its own caveat. In this paper, we conduct a detailed substructure search and dynamical state characterization of Abell 2399, a galaxy cluster in the local Universe (z ~ 0.0579), by performing a multiwavelength analysis and testing…
Emergence of small-scale magnetic flux in the quiet Sun
Gontikakis, C.; Tziotziou, K.; Tsiropoula, G. +4 more
Context. We study the evolution of a small-scale emerging flux region (EFR) in the quiet Sun, from its emergence in the photosphere to its appearance in the corona and its decay.
Aims: We track processes and phenomena that take place across all atmospheric layers; we explore their interrelations and compare our findings with those from recent…
The Large-scale Behavior in the Disk of δ Scorpii from 2000 to 2018
Carciofi, A. C.; Mota, B. C.; Tycner, C. +4 more
We model the circumstellar disk of δ Sco using the three-dimensional Monte Carlo radiative transfer code HDUST in order to quantify the large-scale changes in the disk through the years 2000-2018, and to see if these changes can be attributed to the secondary star affecting the disk throughout its orbit. We determine our best-fitting models throug…
Resolved star formation in the metal-poor star-forming region Magellanic Bridge C
Bolatto, Alberto D.; Rubio, Monica; Kalari, Venu M. +1 more
Magellanic Bridge C (MB-C) is a metal-poor (∼1/5 Z⊙) low-density star-forming region located 59 kpc away in the Magellanic Bridge, offering a resolved view of the star formation process in conditions different to the Galaxy. From Atacama Large Millimetre Array CO (1-0) observations, we detect molecular clumps associated with candidate y…
Present-day gully activity in Sisyphi Cavi, Mars - Flow-like features and block movements
Massé, Marion; Conway, Susan J.; Hiesinger, Harald +5 more
The continuously increasing number of multi-temporal high-resolution images from the surface of Mars offers the possibility for detailed studies of present-day surface activity. In this study we investigated all gullies in the Sisyphi Cavi region (355° E, 71° S) of the south polar region of Mars. This region is influenced by the seasonal depositio…
Multiwavelength Study of an X-Ray Tidal Disruption Event Candidate in NGC 5092
Komossa, S.; Jin, Chichuan; Saxton, R. D. +7 more
We present multiwavelength studies of a transient X-ray source, XMMSL1 J131952.3+225958, associated with the galaxy NGC 5092 at z = 0.023 detected in the XMM-Newton SLew survey (XMMSL). The source brightened in the 0.2-2 keV band by a factor of > 20 in 2005 as compared with previous flux limits and then faded by a factor of >200 as observed …
Prebreakup Arc Intensification due to Short Circuiting of Mesoscale Plasma Flows Over the Plasmapause
Mishin, Evgeny; Streltsov, Anatoly
The prebreakup arc at the inner edge of the auroral boundary is intensified upon arrival of an auroral streamer—the ionospheric signature of the earthbound mesoscale plasma flows (MPF). Yet the cause of electron precipitation enhancement only in this region remains unclear. We suggest that the intensified precipitation comes from the turbulent pla…