Search Publications
Missions
Journals
Publication Years
Orphan optical flare as SOSS emission afterglow, localization in time
Zhirkov, K.; Gorbovskoy, E.; Serra-Ricart, M. +24 more
We report on MASTER optical observations of an afterglow-like optical and X-ray transient AT2021lfa/ZTF21aayokph. We detected the initial steady brightening of the transient at 7σ confidence level. This allowed us to use smooth optical self-similar emission of GRBs model to constrain the explosion time to better than 14 min as well as to estimate …
Vertical Aerosol Distribution and Mesospheric Clouds From ExoMars UVIS
Vandaele, Ann Carine; Daerden, Frank; Ristic, Bojan +12 more
The vertical opacity structure of the martian atmosphere is important for understanding the distribution of ice (water and carbon dioxide) and dust. We present a new data set of extinction opacity profiles from the NOMAD/UVIS spectrometer aboard the ExoMars Trace Gas Orbiter, covering one and a half Mars Years (MY) including the MY 34 Global Dust …
Forbush decreases caused by paired interacting solar wind disturbances
Belov, A. V.; Abunina, M. A.; Abunin, A. A. +3 more
The paper discusses changes in various characteristics of the solar wind, interplanetary magnetic field, geomagnetic activity, and cosmic rays during the registration of paired interacting solar wind disturbances on the Earth using the data base of Forbush effects and interplanetary disturbances - FEID. The cases of pair interaction are considered…
Discovery of an inflated hot Jupiter around a slightly evolved star TOI-1789
Howell, Steve B.; Fridlund, Malcolm; Guenther, Eike W. +11 more
We report here the discovery of a hot Jupiter at an orbital period of 3.208664 ± 0.000015 d around TOI-1789 (TYC 1962-00303-1, TESSmag = 9.1) based on the TESS photometry, ground-based photometry, and high-precision radial velocity (RV) observations. The high-precision RV observations were obtained from the high-resolution spectrographs…
WiNDS: An H α Kinematics Survey of Nearby Spiral Galaxies-Vertical Perturbations in Nearby Disk-type Galaxies
Monachesi, Antonela; Amram, Philippe; Gómez, Facundo A. +5 more
We present the Waves in Nearby Disk galaxies Survey (WiNDS) consisting of 40 nearby low-inclination disk galaxies observed through H α high-resolution Fabry-Perot interferometry. WiNDS consists of 12 new galaxy observations and 28 data archived observations obtained from different galaxy surveys. We derive two-dimensional line-of-sight…
fBLS - a fast-folding BLS algorithm
Mazeh, T.; Faigler, S.; Shahaf, S. +2 more
We present fBLS - a novel fast-folding technique to search for transiting planets, based on the fast-folding algorithm (FFA), which is extensively used in pulsar astronomy. For a given light curve with N data points, fBLS simultaneously produces all the binned phase-folded light curves for an array of Np trial periods. For each folded l…
The multichord stellar occultation on 2019 October 22 by the trans-Neptunian object (84922) 2003 VS2
Derekas, A.; Szigeti, L.; Souami, D. +60 more
Context. Stellar occultations have become one of the best techniques to gather information about the physical properties of trans-Neptunian objects (TNOs), which are critical objects for understanding the origin and evolution of our Solar System.
Aims: The purpose of this work is to determine, with better accuracy, the physical characteristic…
Mitigating the effects of particle background on the Athena Wide Field Imager
Miller, Eric D.; Kraft, Ralph; Gastaldello, Fabio +16 more
The Wide Field Imager (WFI) flying on Athena will usher in the next era of studying the hot and energetic Universe. Among Athena's ambitious science programs are observations of faint, diffuse sources limited by statistical and systematic uncertainty in the background produced by high-energy cosmic ray particles. These particles produce easily ide…
First optical identification of the SRG/eROSITA-detected supernova remnant G 116.6 - 26.1. I. Preliminary results
Palaiologou, E. V.; Leonidaki, I.; Kopsacheili, M.
The supernova remnant (SNR) candidate G 116.6 - 26.1 is one of the few high Galactic latitude (|b| > 15°) remnants detected so far in several wavebands. It was discovered recently in the SRG/eROSITA all-sky X-ray survey and also displays a low-frequency weak radio signature. In this study, we report the first optical detection of G 116.6 - 26.1…
Comparison of machine learning algorithms used to classify the asteroids observed by all-sky surveys
Carry, B.; Penttilä, A.; Klimczak, H. +4 more
Context. Multifilter photometry from large sky surveys is commonly used to assign asteroid taxonomic types and study various problems in planetary science. To maximize the science output of those surveys, it is important to use methods that best link the spectro-photometric measurements to asteroid taxonomy.
Aims: We aim to determine which ma…