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On properties of radio-rich coronal mass ejections
Mittal, Nishant; Sharma, Joginder; Tomar, Vivek +1 more
We have studied properties of the radio-rich coronal mass ejections (CMEs) (observed during 1997–2006) which produce type II (1–14 MHz) i.e. decametric–hectometric or DH radio burst. These DH CMEs are relatively faster and wider than the normal CMEs. The average speed and apparent width of these CMEs is 1048 km/s and 98°, respectively. Majority (a…
On the possibility of microbiota transfer from Venus to Earth
Wickramasinghe, N. C.; Wickramasinghe, J. T.
The possibility of the clouds of Venus providing habitats for extremophilic microorganisms has been discussed for several decades. We show here that the action of the solar wind leads to erosion of parts of the atmosphere laden with aerosols and putative microorganisms, forming a comet-like tail in the antisolar direction. During inferior conjunct…
Infrared study of infrared carbon stars based on 2MASS, IRAS and ISO SWS data
Chen, Pei-Sheng; Shan, Hong-Guang
For this paper, we collected all infrared carbon stars (IRCSs) known so far from the literature and identified the 2MASS counterparts of all IRCSs. Using 2MASS, IRAS and ISO SWS data, we investigate the infrared properties of IRCSs. We find that the infrared colors and temperatures of IRCSs—not only in the IRAS region but also in the near infrared…