Search Publications
Confirmation and Characterization of the Eccentric, Warm Jupiter TIC 393818343 b with a Network of Citizen Scientists
Gagliano, Robert; Kristiansen, Martti H.; LaCourse, Daryll M. +21 more
NASA's Transiting Exoplanet Survey Satellite (TESS) has identified over 7000 candidate exoplanets via the transit method, with gas giants among the most readily detected due to their large radii. Even so, long intervals between TESS observations for much of the sky lead to candidates for which only a single transit is detected in one TESS sector, …
Cluster: List of plasma jets in the subsolar magnetosheath
Temmer, Manuela; Plaschke, Ferdinand; Simon Wedlund, Cyril +6 more
Star Image Centering with Deep Learning. II. HST/WFPC2 Full Field of View
Casetti-Dinescu, Dana I.; Girard, Terrence M.; Baena-Gallé, Roberto +2 more
We present an expanded and improved deep-learning (DL) methodology for determining centers of star images on Hubble Space Telescope/Wide-Field Planetary Camera 2 (WFPC2) exposures. Previously, we demonstrated that our DL model can eliminate the pixel-phase bias otherwise present in these undersampled images; however that analysis was limited to th…
Duskward displacement of plasmoids and reconnection in the near-Earth magnetotail
Miyashita, Yukinaga; Ieda, Akimasa
Magnetic reconnection in the near-Earth magnetotail is responsible for explosive release of energy during substorms and auroral breakups. This near-tail reconnection was previously assumed to occur around the midnight meridian, where earthward flows were typically observed. Based on observations of tailward-moving plasmoids, the Geotail spacecraft…
High-resolution spectroscopy of the intermediate polar EX Hydrae. II. The inner disk radius
Beuermann, K.; Reinsch, K.
Reconstruction of Carrington Rotation Means of Open Solar Flux over the Past 154 Years
Lockwood, Mike; Owens, Mat
We generate reconstructions of signed open solar flux (OSF) for the past 154 years using observations of geomagnetic activity. Previous reconstructions have been limited to annual resolution, but this is here increased by a factor of more than 13 by using averages over Carrington rotation (CR) intervals. We use two indices of geomagnetic activity,…
Unveiling a Hidden Bar-like Structure in NGC 1087: Kinematic and Photometric Evidence Using MUSE/VLT, ALMA, and JWST
Lin, Lihwai; López-Cobá, Carlos; Sánchez, Sebastián F.
We report a faint nonaxisymmetric structure in NGC 1087 through the use of James Webb Space Telescope Near Infrared Camera, with an associated kinematic counterpart observed as an oval distortion in the stellar velocity map, Hα, and CO J = 2 → 1 velocity fields. This structure is not evident in the MUSE optical continuum images but only revealed i…
An isotropic full-sky sample of optically selected blazars
Kudenko, Maria; Troitsky, Sergey
Context. Various high-energy phenomena in the Universe are associated with blazars, which are powerful active galaxies with jets pointing at the observer. Novel results relating blazars to high-energy neutrinos, cosmic rays, and even possible manifestations of new particle physics, often emerge from statistical analyses of blazar samples, and unif…
Photometric study of the overcontact binary NSVS2910034
Tobin, R. Wes; Berrington, Robert C.
We present BVRC+TESS differential photometry of an eclipsing binary system NSVS 2910034. A period analysis reveals unusual variations that are inconsistent with systemic orbital period changes and may be due to surface activity. The best fit models are consistent with a W-type W UMa overcontact binary, consisting of a less massive G7 spectral type…
OGLE-BLAP-001 and ZGP-BLAP-08: Two possible magnetic blue large-amplitude pulsators
Pigulski, Andrzej; Kołaczek-Szymański, Piotr A.; Święch, Marta +2 more
Blue large-amplitude pulsators (BLAPs) are a newly discovered group of compact pulsating stars whose origins are yet to be explained. Of the existing evolutionary scenarios that could lead to the formation of BLAPs, there are two positing that BLAPs are the products of the merger of two stars: either a main-sequence star and a helium white dwarf o…