Information on Service 'XAO Pulsar Data Query'

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The pulsar timing data were obtained with the Nanshan 25M radio telescope. Our observations, which commenced in January 2000, have been made using a dual-channel room-temperature receiver with a bandwidth of 320 MHz centered at 1540 MHz before June 2002. The de-dispersion was provided by a 2X128X2.5 MHz analog filter-bank. The format of the AFB data is "Timer". A cryogenic receiver was mounted in July 2002, which increases the sensitivity to 0.5 mJy. In January 2010, a digital filter-bank (DFB) system came into operation. The higher time resolution allows us to monitor about 280 pulsars, including ten millisecond-pulsars (MSP). The format of the DFB data is "Psrfit". The "psrchive" program could reads and analyzes the data.The data could only be used with the permission of Dr. Na Wang (na.wang@xao.ac.cn), please send her an email for your request.

For a list of all services and tables belonging to this service's resource, see Information on resource 'XAO Pulsar Data Query'

Overview

You can access this service using:

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry, gavo means it is within GAVO's service registry.

Other services provided on the underlying data include:

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
accref Product key Access key for the data N/A N/A
backend Backend ID Backend ID N/A N/A
beconfig Backend Configuration File Name Backend Configuration File Name N/A N/A
date_obs Date_obs Observation date d time.obs
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
fromselector Target Object Object observed N/A meta.id;src
frontend Receiver ID Receiver ID N/A N/A
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
MAXREC Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
object Target Object Object observed N/A meta.id;src
obs_mode Observation Mode Observation Mode N/A N/A
obsbw Observation Bandwidth Observation Bandwidth MHz instr.bandwidth
observer Observer Observer Name N/A obs.observer
obsfreq Observation Frequency Observation Frequency MHz em.bin
obsnchan #Channels Number of Frequency Channels N/A N/A
projid Project Name Project Name N/A meta.id
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
RESPONSEFORMAT Output Format File format requested for output. N/A meta.code.mime
SR Search Radius Search radius deg N/A
VERB Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
accref Product key Access key for the data N/A N/A
accsize File size Size of the data in bytes byte VOX:Image_FileSize
date_obs Date_obs Observation date d time.obs
dec Dec Area center Declination ICRS deg pos.eq.dec;meta.main
object Target Object Object observed N/A meta.id;src
potslink Preview Download link N/A N/A
ra RA Area center RA ICRS deg pos.eq.ra;meta.main

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
accref Product key Access key for the data N/A N/A 1
accsize File size Size of the data in bytes byte VOX:Image_FileSize 11
ra RA Area center RA ICRS deg pos.eq.ra;meta.main 20
dec Dec Area center Declination ICRS deg pos.eq.dec;meta.main 20
object Target Object Object observed N/A meta.id;src 20
date_obs Date_obs Observation date d time.obs 20
potslink Preview Download link N/A N/A 20
mime Type MIME type of the file served N/A N/A 20
id Obs. Id Artificial identifier of the observation N/A meta.id;meta.main 20
observer Observer Observer Name N/A obs.observer 20
projid Project Name Project Name N/A meta.id 20
frontend Receiver ID Receiver ID N/A N/A 20
backend Backend ID Backend ID N/A N/A 20
beconfig Backend Configuration File Name Backend Configuration File Name N/A N/A 20
obs_mode Observation Mode Observation Mode N/A N/A 20
obsfreq Observation Frequency Observation Frequency MHz em.bin 20
obsbw Observation Bandwidth Observation Bandwidth MHz instr.bandwidth 20
obsnchan #Channels Number of Frequency Channels N/A N/A 20
preview Preview Preview URL N/A N/A 20
owner Owner Owner of the data N/A N/A 25
embargo Embargo ends Date the data will become/became public a N/A 25

Copyright, License, Acknowledgements

The files were owned by Xinjiang Astronomical Observatory. And all data are not in the public domain.

VOResource XML (that's something exclusively for VO nerds)