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Strong Lensing Model of SPT-CL J0356-5337, a Major Merger Candidate at Redshift 1.0359
Mahler, Guillaume; Schrabback, Tim; Sharon, Keren +10 more
We present an analysis of the mass distribution inferred from strong lensing by SPT-CL J0356-5337, a cluster of galaxies at redshift $z=1.0359$ revealed in the follow-up of the SPT-SZ clusters. The cluster has an Einstein radius of ${\theta }_{{\rm{E}}}\simeq $ 14″ for a source at z = 3 and a mass within 500 kpc of ${M}_{500\mathrm{kpc}}=4.0\pm 0.…
Reconstructing Solar Wind Inhomogeneous Structures From Stereoscopic Observations in White Light: Solar Wind Transients in 3-D
Wang, Yuming; Shen, Fang; Shen, Chenglong +7 more
White-light images from Heliospheric Imager-1 (HI1) onboard the Solar Terrestrial Relations Observatory (STEREO) provide two-dimensional (2-D) global views of solar wind transients traveling in the inner heliosphere from two perspectives. How to retrieve the hidden three-dimensional (3-D) features of the transients from these 2-D images is intrigu…
Inferences About the Magnetic Field Structure of a CME with Both In Situ and Faraday Rotation Constraints
Wood, Brian E.; Nieves-Chinchilla, Teresa; Kooi, Jason E. +2 more
On 2012 August 2, two coronal mass ejections (CMEs; CME-1 and CME-2) erupted from the west limb of the Sun as viewed from Earth, and were observed in images from the white-light coronagraphs on the SOlar and Heliospheric Observatory and Solar TErrestrial RElations Observatory (STEREO) spacecraft. These events were also observed by the Very Large A…
Characterization of a local dust storm on Mars with REMS/MSL measurements and MARCI/MRO images
Hueso, Ricardo; Sánchez-Lavega, Agustín; Ordonez-Etxeberria, Iñaki +1 more
The REMS instrument on board the Curiosity rover has been collecting meteorological data from Gale crater on Mars since August 2012. A dust storm that developed north of Gale crater in sol 852 of the Mars Science Laboratory (MSL) mission spread above the location of the Curiosity rover during sols 853-855 (December 30, 2014 to January 1, 2015, are…
Discovery of a thermonuclear Type I X-ray burst in infrared: new limits on the orbital period of 4U 1728-34
Altamirano, D.; Belloni, T.; Vincentelli, F. M. +4 more
We report the detection of an infrared burst lagging a thermonuclear Type I X-ray burst from the accreting neutron star (NS) 4U 1728-34 (GX 354-0). Observations were performed simultaneously with XMM-Newton (0.7-12 keV), NuSTAR (3-79 keV), and HAWK-I@VLT (2.2 µm). We measure a lag of 4.75 ± 0.5 s between the peaks of the emission in the two …
Photometric investigation on the W-subtype contact binary V1197 Her
Soonthornthum, Boonrucksar; Zhou, Xiao
Multi-color light curves of V1197 Her were obtained with the 2.4 meter optical telescope at the Thai National Observatory and the Wilson-Devinney (W-D) program was used to model the observational light curves. The photometric solutions reveal that V1197 Her is a W-subtype shallow contact binary system with a mass ratio of q = 2.61 and a fill-out f…
NGTS-8b and NGTS-9b: two non-inflated hot Jupiters
Jackman, James A. G.; Wheatley, Peter J.; Bayliss, Daniel +36 more
We report the discovery, by the next generation transit survey (NGTS), of two hot Jupiters NGTS-8b and NGTS-9b. These orbit a V = 13.68 K0V star (Teff = 5241 ± 50 K) with a period of 2.49970 d, and a V = 12.80 F8V star (Teff = 6330 ± 130 K) in 4.43527 d, respectively. The transits were independently verified by follow-up phot…
Sunquake with a second bounce, other sunquakes, and emission associated with the X9.3 flare of 6 September 2017. I. Observations
Dammasch, Ingolf E.; Matthews, Sarah; Inoue, Satoshi +4 more
Aims: The 6 September 2017 X9.3 solar flare produced very unique observations of magnetic field transients and a few seismic responses, or sunquakes, detected by the Helioseismic and Magnetic Imager (HMI) instrument aboard Solar Dynamic Observatory (SDO) spacecraft, including the strongest sunquake ever reported. This flare was one of a few f…
Coupled day-night models of exoplanetary atmospheres
Gandhi, Siddharth; Jermyn, Adam S.
We provide a new framework to model the day side and night side atmospheres of irradiated exoplanets using 1D radiative transfer by incorporating a self-consistent heat flux carried by circulation currents (winds) between the two sides. The advantages of our model are its physical motivation and computational efficiency, which allows for an explor…
Searching for volcanic activity and a mercury-like exosphere of the super-Earth HD3167 b
Guenther, Eike W.; Kislyakova, Kristina G.
HD3167 b is a transiting super-Earth that has a density which is consistent with a rocky composition. The planet is exposed to strong radiation, intense stellar wind, and likely strong tidal forces and induction heating. According to theory, planets that are so close to the star should have an atmosphere like Mercury but much more extended and den…