Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/ArzoumaniantagP2175tp.pdf Дата изменения: Tue Oct 11 01:34:22 2005 Дата индексирования: Sun Dec 23 00:04:35 2007 Кодировка: Поисковые слова: mercury surface

Proposal Identification No.:

P2175

Date Received:

2005-Oct-03 20:33:47

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 7.5 Hours

A Pulsar Search to Solve a 50 Year-old Mystery

The optical and radio nebula G70.7+1.2 has b een the ob ject of scrutiny and sp eculation for half a century. Multiwavelength observations have rep eatedly yielded unexp ected results, ruling out successive mo dels of the ob ject's nature and the mechanisms at work within it. A recent Chandra X-ray image obtained by us suggests a new interpretation of the available facts: a hard X-ray p oint source near the ap ex of the G70.7+1.2 b ow-sho ck structure is a young neutron star and, in all likeliho o d, an active radio pulsar. We prop ose a deep search for pulsations from this source through a total of 7.5 hours of L- and S-band observations. A successful detection will allow us to finally pin down the nature, energetics, and evolutionary history of G70.7+1.2, an ob ject that uniquely brings into view the interactions of pulsar winds with dense interstellar matter.

Name Zaven Arzoumanian

Institution USRA, NASA-GSFC

E-mail zaven@milkyway.gsfc.nasa.gov

Phone 301-286-2547

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
L-wide S-low

Atmospheric Observation Instruments:

Sp ecial Equipment or setup: 4 WAPPs

RFI Considerations
1


Frequency Ranges Planned

2