Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/WolszczantagP2111tp.pdf Дата изменения: Sun Sep 11 17:42:11 2005 Дата индексирования: Sat Dec 22 23:49:08 2007 Кодировка: Поисковые слова: http astrokuban.info astrokuban

Proposal Identification No.:

PP2111

Date Received:

2005-May-29 08:11:08

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Long-term Pulsars Galactic 72 Hours

Timing observations of the planets pulsar, PSR B1257+12

We prop ose to continue the systematic timing observations of the planets pulsar, PSR B1257+12, with the Arecib o radio telescop e and the four WAPP backend pro cessors at 327, 430, 1400, and 2600 MHz over the next two years. Continuation of a precision timing of this pulsar at multiple frequencies will make it p ossible to verify a very likely presence of an astroid b elt at the outskirts of the pulsar's planetary system. If confirmed, this detection will practically complete the inventory of the system, currently known to consist of three terrestrial-mass planets. As the PSR B1257+12 planetary system app ears as an astonishingly accurate, scaled-down copy of the inner solar system, such a complete characterization of its comp osition will b e helpful in further studies of low-mass planets around other kinds of stars.

Name Alex Wolszczan

Institution Penn State University

E-mail alex@astro.psu.edu

Phone 814 863 1756

Student no

Service Observing Request

Remot e Observing Request

X

None All of the observing run. Part of the observing run. Queue Observing X

No Maybe Yes

Instrument Setup
430 G L-wide S-low 327

Atmospheric Observation Instruments:

Sp ecial Equipment or setup: WAPP x 4, PSPM

RFI Considerations
1


Frequency Ranges Planned

2