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Proposal Identification No.:

P2951

Date Received:

2014-Aug-28 09:52:00

Technical Page
This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Pulsars Galactic 24 Hours 1h

Radioastron-Arecibo observations: Study of Local Scattering Material

We propose VLBI observations of strong nearby pulsars with the Arecibo and RadioAstron in P-band to study scattering material close to the Earth. This material appears to be fundamentally different from the diffuse interstellar medium (ISM) and it is responsible for the intra-day variability of quasars at centimeter wavelengths. This local medium is likely important in the scattering of nearby pulsars. Our goal is to determine the distribution and spectrum of this local scattering material.

Name Tatiana V Smirnova

Institution Lebedev Physical Institute

E-mail tania@prao.ru

Phone +74967318044

Student no

Remote Observing Request

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

Instrument Setup
327 Atmospheric Observation Instruments:

Sp ecial Equipment or setup: We request the P-band receivers (dual circular pol) for compatibility with the spacecraft receivers. We will use 16-MHz bandpass (316-332 MHz) upper sidebands only for every polarizations at P-band(Radioastron intrinsic configuration). Data correlation will be conducted at the ASC Correlator in Moscow. Bit Rate will be 128 Mbits/sec. We will use 16-MHz bandpass (316-332 MHz) upper sidebands only for every polarizations at P-band (Radioastron intrinsic configuration). 1


Transmission of data via internet to the ASC in Moscow. Analysis via structure and coherence functions; see for example (Smirnova et al. 2014, published in ApJ)

RFI Considerations Frequency Ranges Planned
316-332

2