Results 111 to 120 of about 30,236 (236)
Comet 289P/Blanpain: Near-perihelion Activity and the Phoenicids
The Astronomical JournalWe present NEOWISE observations of Jupiter family comet 289P/Blanpain, the parent body of the Phoenicid meteoroid stream. Near-infrared images at 3.4 μ m (W1) and 4.6 μ m (W2) were obtained near perihelion on two occasions: UT 2019 October 30 (inbound ...
Toshihiro Kasuga
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EVOLUTIONARY TRACKS OF SHORT-PERIODIC METEOR SWARMS
Odessa Astronomical Publications, 2017 The relations of the meteor streams with comets and asteroids are determined by means of the physical and dynamic properties of these bodies. The mathematical model is considered for the short-periodic meteor stream, the particles of which are ejected ...
E. N. Kramer +2 more
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Photochemistry and Photobiology, EarlyView.Exposure to artificial light at night (ALAN), particularly at blue wavelengths, disrupts circadian rhythms by suppressing melatonin, thereby increasing cancer susceptibility. This systematic review consolidates evidence linking prolonged ALAN exposure to an elevated risk of breast and prostate tumors.
Gabriel Barboza +4 more
wiley +1 more source
On the Border: Searching for Cometary Activity near the Centaur–JFC Transition Line
The Planetary Science JournalCurrent wide-field surveys discover ∼15 Jupiter-family comets (JFCs) each year, typically identified via visual detection of a dust coma or tail. The same surveys also discover many asteroids that have distant JFC-like orbits, but with no reported ...
A. Fraser Gillan +4 more
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RAD51 and RAD51 paralog inhibition sensitizes nonreplicating quiescent keratinocytes to UV radiation
Photochemistry and Photobiology, EarlyView.UV radiation and other compounds generate DNA adducts that block transcription and induce cell death if not removed by the nucleotide excision repair system. In this work, we used a small‐scale pharmacological screen to discover that inhibition of the recombinase RAD51 sensitized nonreplicating quiescent keratinocytes to both UVR and other agents that ...
Saman Khan +3 more
wiley +1 more source
Covertly Active Comet (139359) 2001 ME1
The Planetary Science JournalOn 2018 November 18, coronagraphs onboard the Solar and Heliospheric Observatory (SOHO) captured an unrecognized comet crossing its fields of view. We identified this comet to be the minor planet (139359) 2001 ME _1 , whose previously unnoticed dust ...
Qicheng Zhang +5 more
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Search for the True Parent Body of the Phoenicid Meteor Shower
The Astronomical JournalIn 2024, Ďurišová et al. found that the meteor shower Phoenicids, IAU No. 254, code PHO, can originate in the nuclei of three comets, 46P/Wirtanen, 104P/Kowal 2, and 289P/Blanpain.
Martina Kováčová +2 more
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The state of knowledge concerning the Kuiper belt [PDF]
The arguments for and against the idea that most short-period comets originate in the Kuiper belt are discussed. Observational constraints on the distribution of mass in the Kuiper belt are reviewed as well as a model of the physical conditions that now ...
Levison, Harold F.
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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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Predictions for Sparse Photometry of Jupiter-family Comet Nuclei in the LSST Era
The Planetary Science JournalThe Legacy Survey of Space and Time (LSST) at Vera C. Rubin Observatory will deliver high-quality, temporally sparse observations of millions of solar system objects on an unprecedented scale.
A. Donaldson +3 more
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