Institution
Jet Propulsion Laboratory
Facility•La Cañada Flintridge, California, United States•
About: Jet Propulsion Laboratory is a facility organization based out in La Cañada Flintridge, California, United States. It is known for research contribution in the topics: Mars Exploration Program & Telescope. The organization has 8801 authors who have published 14333 publications receiving 548163 citations. The organization is also known as: JPL & NASA JPL.
Topics: Mars Exploration Program, Telescope, Galaxy, Coronagraph, Planet
Papers published on a yearly basis
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TL;DR: With the Delsarte-MacWilliams inequalities as a starting point, an upper bound is obtained on the rate of a binary code as a function of its minimum distance, which is asymptotically less than Levenshtein's bound and so also Elias's.
Abstract: With the Delsarte-MacWilliams inequalities as a starting point, an upper bound is obtained on the rate of a binary code as a function of its minimum distance. This upper bound is asymptotically less than Levenshtein's bound, and so also Elias's.
473 citations
TL;DR: The first radio occultation measurements of the CHAMP (CHAllenging Minisatellite Payload) satellite using Global Positioning System (GPS) signals have been performed on February 11, 2001.
Abstract: The first radio occultation measurements of the CHAMP (CHAllenging Minisatellite Payload) satellite using Global Positioning System (GPS) signals have been performed on February 11, 2001. By the end of April 2001 more than 3000 occultations were recorded. Globally distributed vertical profiles of dry temperature and specific humidity are derived, of which a set of 438 vertical dry temperature profiles is compared with corresponding global weather analyses. The observed temperature bias is less than ∼1 K above the tropopause and even less than 0.5 K in the altitude interval from 12 to 20 km at latitudes >30°N. About 55% of the compared profiles reached the last kilometer above the Earth's surface. In spite of the activated anti-spoofing mode of the GPS system the state-of-the-art GPS flight receiver aboard CHAMP combined with favorable antenna characteristics allows for atmospheric sounding with high accuracy and vertical resolution.
467 citations
Max Planck Society1, California Institute of Technology2, Centre national de la recherche scientifique3, University of Milano-Bicocca4, University of Cambridge5, Washington University in St. Louis6, Institut de Ciències de l'Espai7, Radboud University Nijmegen8, Katholieke Universiteit Leuven9, Jet Propulsion Laboratory10, Institut d'Astrophysique de Paris11
TL;DR: The New Gravitational-Wave Observatory (NGO) as discussed by the authors, a mission under study by the European Space Agency for launch in the early 2020s, will survey the low-frequency gravitational wave sky (from 0.1 mHz to 1 Hz), detecting and characterizing a broad variety of systems and events throughout the Universe, including the coalescences of massive black holes brought together by galaxy mergers, the inspirals of stellar-mass black holes and compact stars into central galactic black holes; several millions of ultra-compact binaries, both detached and mass transferring, in
Abstract: We review the expected science performance of the New Gravitational-Wave Observatory (NGO, a.k.a. eLISA), a mission under study by the European Space Agency for launch in the early 2020s. eLISA will survey the low-frequency gravitational-wave sky (from 0.1 mHz to 1 Hz), detecting and characterizing a broad variety of systems and events throughout the Universe, including the coalescences of massive black holes brought together by galaxy mergers; the inspirals of stellar-mass black holes and compact stars into central galactic black holes; several millions of ultra-compact binaries, both detached and mass transferring, in the Galaxy; and possibly unforeseen sources such as the relic gravitational-wave radiation from the early Universe. eLISA's high signal-to-noise measurements will provide new insight into the structure and history of the Universe, and they will test general relativity in its strong-field dynamical regime.
462 citations
TL;DR: In this article, Ulysses' third orbit showed that the fast solar wind was slightly slower, significantly less dense, cooler, and had less mass and momentum flux than during the previous solar minimum (first) orbit.
Abstract: [1] Observations of solar wind from both large polar coronal holes (PCHs) during Ulysses' third orbit showed that the fast solar wind was slightly slower, significantly less dense, cooler, and had less mass and momentum flux than during the previous solar minimum (first) orbit. In addition, while much more variable, measurements in the slower, in-ecliptic wind match quantitatively with Ulysses and show essentially identical trends. Thus, these combined observations indicate significant, long-term variations in solar wind output from the entire Sun. The significant, long-term trend to lower dynamic pressures means that the heliosphere has been shrinking and the heliopause must be moving inward toward the Voyager spacecraft. In addition, our observations suggest a significant and global reduction in the mass and energy fed in below the sonic point in the corona. The lower supply of mass and energy may result naturally from a reduction of open magnetic flux during this period.
462 citations
University of Maryland, College Park1, University of Alaska Fairbanks2, Max Planck Society3, Jet Propulsion Laboratory4, Goddard Space Flight Center5, University of Hawaii6, University of Arizona7, Purdue University8, Brown University9, Cornell University10, University of Provence11, Johns Hopkins University Applied Physics Laboratory12, University of Paris13
TL;DR: In situ observations show that comet Hartley 2 is an unusually hyperactive comet, and this nucleus is outgassing primarily because of CO2, which drags chunks of ice out of the nucleus.
Abstract: Understanding how comets work, i,e., what drives their activity, is crucial to using comets to study the early solar system. EPOXI flew past comet 103P/Hartley 2, one with an unusually small but very active nucleus. taking both images and spectra. Unlike large, relatively inactive nuclei, this nncleus is outgassing primarily due to CO2, which drags chnnks of ice out of the nnclens. It also shows significant differences in the relative abundance of volatiles from various parts of the nucleus.
461 citations
Authors
Showing all 9033 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| B. P. Crill | 148 | 486 | 111895 |
| George Helou | 144 | 662 | 96338 |
| H. K. Eriksen | 141 | 474 | 104208 |
| Charles R. Lawrence | 141 | 528 | 104948 |
| W. C. Jones | 140 | 395 | 97629 |
| Gianluca Morgante | 138 | 478 | 98223 |
| Jean-Paul Kneib | 138 | 805 | 89287 |
| Kevin M. Huffenberger | 138 | 402 | 93452 |
| Robert H. Brown | 136 | 1174 | 79247 |
| Federico Capasso | 134 | 1189 | 76957 |
| Krzysztof M. Gorski | 132 | 380 | 105912 |
| Olivier Doré | 130 | 427 | 104737 |
| Mark E. Thompson | 128 | 527 | 77399 |
| Clive Dickinson | 123 | 501 | 80701 |
| Daniel Stern | 121 | 788 | 69283 |