Results 61 to 70 of about 39,671 (263)
Jupiter Co-Orbital Comet P/2023 V6 (PANSTARRS): Orbital History and Modern Activity State
The Astrophysical Journal LettersThe discovery of the transient Jupiter co-orbital comet P/2019 LD2 (ATLAS) drew significant interest. Not only will LD2 transition between being a Centaur and a Jupiter-family comet (JFC) in 2063, the first time this process can be observed as it happens,
Theodore Kareta +4 more
doaj +1 more source
PLoS ONE, 2018 The α7 nicotinic acetylcholine receptor (nAChR) is a ligand-gated ion channel that plays an important role in cellular calcium signaling contributing to synaptic development and plasticity, and is a key drug target for the treatment of neurodegenerative ...
Justin R King, Nadine Kabbani
doaj +1 more source
Local manifestations of cometary activity [PDF]
, 2019 Comets are made of volatile and refractory material and naturally experience various degrees of sublimation as they orbit around the Sun. This gas release, accompanied by dust, represents what is traditionally described as activity.
El-Maarry, Ramy +7 more
core +2 more sources
Comparing the dynamics of Jupiter-family Comets and comet-like fireballs
Astronomy & AstrophysicsContext. Jupiter-family comets (JFCs), which originate from the Kuiper belt and scattered disk, exhibit low-inclination and chaotic trajectories due to close encounters with Jupiter. Despite their typically short incursions into the inner solar system, a notable number of them are on Earth-crossing orbits, with fireball networks detecting many objects ...
P. M. Shober +8 more
openaire +6 more sources
Advanced Science, EarlyView.This study reports the development of a fully humanized bispecific T cell engager targeting IL13RA2, a tumor‐associated antigen enriched in glioblastoma. This off‐the‐shelf immunotherapy drives potent, antigen‐dependent T cell activation and tumor killing, and prolongs survival in experimental GBM and other solid tumors models without detectable off ...
Joseph T. Duffy +16 more
wiley +1 more source
Gauss-Radau Small-body Simulator (GRSS): An Open-source Library for Planetary Defense
The Planetary Science JournalWe present GRSS , a small-body propagation and orbit determination library specifically designed for planetary defense applications. GRSS is an end-to-end, open-source software tool that begins with optical observations obtained from the Minor Planet ...
Rahil Makadia +3 more
doaj +1 more source
2006 Fragmentation of Comet 73P/Schwassmann-Wachmann 3B Observed with Subaru/Suprime-Cam
, 2009 We analyzed the Subaru/Suprime-Cam images of 73P/Schwassmann-Wachmann 3B and detected no fewer than 154 mini-comets. We applied synchrone-syndyne analysis, modified for rocket effect analysis, to the mini-fragment spatial distribution. We found that most
Ishiguro, Masateru +3 more
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Plasma Dynamics in Comets I. Plasma Instability.
The Astrophysical Journal, 1962 Biermann suggested that ionized gas clouds in comet tails are accelerated by collision with a stream of solar particles. The field-free case is discussed to establish conditions for which cometary plasma acceleration may be enhanced by plasma instability.
Fred Hoyle, Martin Harwit
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Advanced Science, EarlyView.Light‐switchable MSCs (MSC‐UCNPs) were constructed by intracellular incorporation of UCNPs. Upon 980 nm irradiation, UCNPs emitted localized ultraviolet light (365 nm), activating the ROS/HEXB/LAMP1 signaling pathway to suppress lysosome–multivesicular body fusion and thereby enhance exosome biogenesis. Embedded within an injectable hydrogel, MSC‐UCNPs
Tingting Wu +7 more
wiley +1 more source
The Dust Trail of Comet 67P/Churyumov-Gerasimenko
, 2007 We report the detection of comet 67P/Churyumov-Gerasimenko's dust trail and nucleus in 24 micron Spitzer Space Telescope images taken February 2004. The dust trail is not found in optical Palomar images taken June 2003.
A'Hearn +64 more
core +1 more source