Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/BhatttagT2317tp.pdf Дата изменения: Fri Feb 9 22:21:06 2007 Дата индексирования: Sat Sep 6 04:40:02 2008 Кодировка: Поисковые слова: http www.astronomy.ru forum index.php topic 4644.0.html

Proposal Identification No.:

T2317

Date Received:

2007-Jan-31 23:00:26

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT:
Observations made with the Arecibo Observatory 430 MHz radar in the past have revealed the presence of the gyro line in the incoherent scatter spectra very clearly. Our previous observations have shown that the gyro line is visible during the conditions of low electron density, mainly at dawn and at dusk. The theory of incoherent scatter predicts the shape and the frequency offset for the gyro line. We believe that the gyro line technique can be an accurate measure for the electron density at low values. Also, the sharpness of the gyro line is highly dependent on the electron temperature. We propose to make night-time electron density and temperature measurements by fitting the gyro line data to the theory. We propose to make these measurements in the summer to complement our winter-time measurements that gave rise to many unanswered questions.

Regular Terrestrial Aeronomy Radar Ionosphere 126 Hours 4 hrs

Gyro line technique to infer night-time electron density and temperature and investigating effect of conjugate photoelectrons on IS spectra

Name Asti Bhatt

Institution Cornell University

E-mail anb22@cornell.edu

Phone 607-255-9070

Student G

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Instrument Setup
430 G 430 CH radar

Atmospheric Observation Instruments: Ionosonde Sp ecial Equipment or setup: We would like to use the Digital Receiver System.

RFI Considerations
1


Frequency Ranges Planned

2