Results 41 to 50 of about 2,361 (128)

Predictions of the Nancy Grace Roman Space Telescope Galactic Exoplanet Survey. III. Detectability of Giant Exomoons of Wide-separation Giant Planets

The Astronomical Journal
The Nancy Grace Roman Space Telescope (Roman) will conduct a Galactic Exoplanet Survey to discover bound and free-floating exoplanets using gravitational microlensing. Roman should be sensitive to lenses with mass down to ∼0.02 M _⊕ , or roughly the mass
Matthew Lastovka, B. Scott Gaudi, Samson A. Johnson, Matthew T. Penny, Eamonn Kerins, Nicholas J. Rattenbury   +5 more
doaj   +1 more source

Planetary Construction Zones in Occultation: Discovery of an Extrasolar Ring System Transiting a Young Sun-like Star and Future Prospects for Detecting Eclipses by Circumsecondary and Circumplanetary Disks [PDF]

, 2012
The large relative sizes of circumstellar and circumplanetary disks imply that they might be seen in eclipse in stellar light curves. We estimate that a survey of ~10^4 young (~10 Myr old) post-accretion pre-MS stars monitored for ~10 years should yield
Alice C. Quillen, Andrew Collier Cameron, Andrews, Baraffe, Barnes, Briceño, Canup, Chen, Chiang, Clampin, Cutri, D'Antona, de Pater, de Zeeuw, Duchêne, Eric E. Mamajek, Erin L. Scott, Fred Moolekamp, Galan, Graczyk, Guinan, Hartigan, Herbst, Ireland, Ivezic, Khaliullin, Kraus, Lin, Mamajek, Mamajek, Mamajek, Mamajek, Mark J. Pecaut, Massey, Matthew A. Kenworthy, McCabe, Monin, Neil R. Parley, Ohta, Pecaut, Perryman, Pojmanski, Preibisch, Press, Quillen, Quillen, Siess, Skrutskie, Stapelfeldt, The DENIS Consortium., Tiscareno, Torres, van Leeuwen, Voges, Voges, Ward, Wright, Zacharias   +57 more
core   +3 more sources

Knudsen effusion mass spectrometry: Current and future approaches

Rapid Communications in Mass Spectrometry, Volume 38, Issue 14, 30 July 2024.
Rationale Knudsen effusion mass spectrometry (KEMS) has been a powerful tool in physical chemistry since 1954. There are many excellent reviews of the basic principles of KEMS in the literature. In this review, we focus on the current status and potential growth areas for this instrumental technique.
Nathan S. Jacobson, Jean‐Yves Colle, Valentina Stolyarova, Torsten Markus, Ioana Nuta   +4 more
wiley   +1 more source

In Situ Formation and Dynamical Evolution of Hot Jupiter Systems [PDF]

, 2016
Hot Jupiters, giant extrasolar planets with orbital periods shorter than ~10 days, have long been thought to form at large radial distances, only to subsequently experience long-range inward migration. Here, we propose that in contrast with this picture,
Batygin, Konstantin, Bodenheimer, Peter H., Laughlin, Gregory P.   +2 more
core   +2 more sources

Earth's Alfvén Wings Driven by the April 2023 Coronal Mass Ejection

Geophysical Research Letters, Volume 51, Issue 14, 28 July 2024.
Abstract We report a rare regime of Earth's magnetosphere interaction with sub‐Alfvénic solar wind in which the windsock‐like magnetosphere transforms into one with Alfvén wings. In the magnetic cloud of a Coronal Mass Ejection (CME) on 24 April 2023, NASA's Magnetospheric Multiscale mission distinguishes the following features: (a) unshocked and ...
Li‐Jen Chen, Daniel Gershman, Brandon Burkholder, Yuxi Chen, Menelaos Sarantos, Lan Jian, James Drake, Chuanfei Dong, Harsha Gurram, Jason Shuster, Daniel B. Graham, Olivier Le Contel, Steven J. Schwartz, Stephen Fuselier, Hadi Madanian, Craig Pollock, Haoming Liang, Matthew Argall, Richard E. Denton, Rachel Rice, Jason Beedle, Kevin Genestreti, Akhtar Ardakani, Adam Stanier, Ari Le, Jonathan Ng, Naoki Bessho, Megha Pandya, Victoria Wilder, Christine Gabrielse, Ian Cohen, Hanying Wei, Christopher T. Russell, Robert Ergun, Roy Torbert, James Burch   +35 more
wiley   +1 more source

Extrasolar Planet Orbits and Eccentricities

, 2003
The known extrasolar planets exhibit many interesting and surprising features--extremely short-period orbits, high-eccentricity orbits, mean-motion and secular resonances, etc.--and have dramatically expanded our appreciation of the diversity of possible
Tremaine, Scott, Zakamska, Nadia L.
core   +2 more sources

On disc driven inward migration of resonantly coupled planets with application to the system around GJ876 [PDF]

, 2001
We consider two protoplanets gravitationally interacting with each other and a protoplanetary disc. The two planets orbit interior to a tidally maintained disc cavity while the disc interaction indices inward migration. When the migration is slow enough,
Bryden, Goldreich, Goldreich, J. C. B. Papaloizou, Kley, Kley, Laughlin, Lin, Lin, Lubow, M. D. Snellgrove, Marcy, Masset, Nelson, Papaloizou, R. P. Nelson, Shakura, Sinclair   +17 more
core   +2 more sources

Advances in high‐temperature operatable triboelectric nanogenerator

SusMat, Volume 4, Issue 3, June 2024.
Triboelectric nanogenerator (TENG), as a continuous, durable, and self‐sufficient power source, offers an innovative approach to effectively utilize diverse mechanical energy. This review comprehensively presents the current state and research advancements in high‐temperature operatable TENG (HTO‐TENG), providing valuable insights into future research ...
Ruirui Cao, Ying Liu, Huilin Li, Zhitao Shen, Fumin Li, Xiaoyong Jia, Chong Chen, Rong Liu, Caiqin Luo, Wensheng Yang, Rongrong Bao, Caofeng Pan   +11 more
wiley   +1 more source

RV Measurements of Directly Imaged Brown Dwarf GQ Lup B to Search for Exosatellites

The Astronomical Journal
GQ Lup B is one of the few substellar companions with a detected cicumplanetary disk (CPD). Observations of the CPD suggest the presence of a cavity, possibly formed by an exosatellite.
Katelyn Horstman, Jean-Baptiste Ruffio, Konstantin Batygin, Dimitri Mawet, Ashley Baker, Chih-Chun Hsu, Jason J. Wang, Ji Wang, Sarah Blunt, Jerry W. Xuan, Yinzi Xin, Joshua Liberman, Shubh Agrawal, Quinn M. Konopacky, Geoffrey A. Blake, Clarissa R. Do Ó, Randall Bartos, Charlotte Z. Bond, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Luke Finnerty, Michael P. Fitzgerald, Nemanja Jovanovic, Ronald López, Emily C. Martin, Evan Morris, Jacklyn Pezzato, Garreth Ruane, Ben Sappey, Tobias Schofield, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Nicole L. Wallack, Peter Wizinowich   +37 more
doaj   +1 more source

Thermal Equation of State of Cubic Silicon Carbide at High Pressures

ChemPhysChem, Volume 25, Issue 9, May 2, 2024.
The thermoelastic properties of SiC with a zinc‐blende crystal structure are experimentally determined. Previous experimental studies contained errors due to significant uncertainties of measured pressures and temperatures and unreleased residual stresses.
Artem Chanyshev, Naira Martirosyan, Lin Wang, Amrita Chakraborti, Narangoo Purevjav, Fei Wang, Eun Jeong Kim, Hu Tang, Timofey Fedotenko, Shrikant Bhat, Robert Farla, Tomoo Katsura   +11 more
wiley   +1 more source