MEXART IPS observations. Instrument status report IPS...MEXART IPS observations. Instrument status...
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MEXART IPS observations. Instrument status report Americo Gonzalez-Esparza, Ernesto Aguilar-Rodriguez, Julio Mejia-Ambriz, Esmeralda Romero-Hernandez, Oyuki Chang-Martinez, Victor De la Luz, Pedro Corona-Romero, Armando Carrillo, Ernesto Andrade, Pablo Villanueva SCiESMEX, Instituto de Geofisica, UNAM Mexican Array Radio Telescope
Transcript of MEXART IPS observations. Instrument status report IPS...MEXART IPS observations. Instrument status...
MEXART IPS observations. Instrument status report
Americo Gonzalez-Esparza, Ernesto Aguilar-Rodriguez, Julio Mejia-Ambriz, Esmeralda Romero-Hernandez, Oyuki Chang-Martinez, Victor De la Luz, Pedro Corona-Romero,
Armando Carrillo, Ernesto Andrade, Pablo Villanueva
SCiESMEX, Instituto de Geofisica, UNAM
Mexican Array Radio Telescope
S I LV I A B R AV O ( 1 9 4 5 - 2 0 0 0 )
• system configuration
• process to reach full operation
• Mexican Space Weather Service (SCiESMEX)
• IPS data and solar wind modeling as a space weather product
Talk outline
Romero-Hernandez et al., 2015
Romero-Hernandez et al., 2015
Romero-Hernandez et al., 2015
Romero-Hernandez et al., 2015
1
0.1
1.0
MEXART radiosource 3C273 2014
1Radial distance [UA]
0.1
1.0Scintillation index m
0.4 0.5 0.6 0.7 0.8 0.9
Power-law index : -2.12
1
0.1
1.0
MEXART radiosource 3C298 2014
1Radial distance [UA]
0.1
1.0
Scintillation index m
0.4 0.5 0.6 0.7 0.8 0.9
Power-law index : -2.68
power spectra of IPS observations and model fits
0.1 1.0frequency (Hz)
10−2
10−1
100
norm
aliz
ed p
ower
3C298α = 3.8size = 0.30
ε = ( AU) 31.30 0.52AR = 1.0χ2 = 0.33
date = / / 2014 11 13
V = +/− km/s 585 55
obsfit
power spectra of IPS observations and model fits
0.1 1.0frequency (Hz)
10−2
10−1
100
norm
aliz
ed p
ower
3C273α = 3.8size = 0.40
ε = ( AU) 50.70 0.77AR = 1.0χ2 = 0.12
date = / / 2014 11 13
V = +/− km/s 425 30
obsfit
Chang-Martinez et al., 2015
MEXART radiosource 3C298
10 20 30 40 50 60 70Elongation (degrees)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
m index
maximum value at : 21.2
Chang-Martinez et al., 2015
0.1
0.5
1
1.5
2
g-level
0.34 AU
0.64 AU
0.86 AU
0.98 AU
200
400
600
800
/ /2014 6 11
Chang-Martinez et al., 2015
200
300
400
500
600
700
800
Velocity(km/s)
0.34 AU
0.64 AU
0.86 AU
0.98 AU
200
400
600
800
/ /2014 6 11
Chang-Martinez et al., 2015
https://www.wmo-sat.info/product-access-guide/space-weather-product-portal
https://www.wmo-sat.info/product-access-guide/domain/space
Conclusions
• MEXART is a fully dedicated array to perform IPS observations
• By the end of 2015 the array will operate, for the first time, with the full antenna
• We will have a new receiver with 4 channels and 4MHz bandwidth
• We expect a significant improvement in the instrument’s response. We will increment the number of radio sources and the signal to noise ratio
• We are developing the methodology to obtain solar wind parameters in near real time
• MEXART observations and tomographic modeling as a space weather product
Romero-Hernandez et al., 2015
