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Ciencias del Geoespacio y Astronomía: Publicaciones recientes

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Por | Apaza, Joab; Kuyeng, Karim; Flores, Roberto; Milla, M.; Rodrigues, F. S.; Scipión, Danny (2022 CEDAR Workshop, 2022-06)

Preliminary AMISR-14 radar observations of F-region incoherent backscatter echoes at the Jicamarca Radio Observatory (JRO)

A 14-panel Advanced Modular Incoherent Scatter Radar (AMISR-14) was installed at the Jicamarca Radio Observatory (IGP- JRO) in 2014. Because of its size, this radar was mainly used to observe coherent echoes such as those produced by the Equatorial Electrojet (EEJ) and Equatorial Spread F (ESF). ...
- Incoherent scatter radar
- AMISR-14
- Jicamarca Radio Observatory
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Por | Vásquez, V.; Milla, M.; Kuyeng, Karim; Gonzales, J.; Scipión, Danny (2023 CEDAR Workshop, 2023-06)

Clustering and data reduction algorithm applied to spectra measured with a multi-static HF sounding system in Peru

The HF radar is a network of HF radio beacons and receivers for ionospheric sounding, and it has been operating in Peru since 2016. The purpose of this instrument is to measure the group delay, Doppler shift, power, and other parameters in order to estimate the regional plasma density as a function ...
- HF radar
- Coherent echoes
- Multifrequency transmitting
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Por | Rodrigues, F.S.; Milla, M.A.; Scipión, Danny; Apaza, Joab; Kuyeng, Karim; Sousasantos, J. ... (Springer Open, 2023-08-09)

On new two-dimensional UHF radar observations of equatorial spread F at the Jicamarca Radio Observatory

We describe a mode for two-dimensional UHF (445 MHz) radar observations of F-region irregularities using the 14-panel version of the advanced modular incoherent scatter radar (AMISR-14). We also present and discuss examples of observations made by this mode. AMISR-14 is installed at the Jicamarca Radio ...
- Jicamarca Radio Observatory
- AMISR-14
- Equatorial Spread-F (ESF)
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Por | Kuyeng, Karim; Scipión, Danny; Condor, P.; Manay, E.; Milla, M. (2023 CEDAR Workshop, 2023-06)

Preliminary results of new operation mode JULIA Medium Power at JRO

The main radar of the Jicamarca Radio Observatory (JRO), for several years, has operated with two main modes, the ISR mode with big transmitters (1.5 MW), operating around 1000 hours per year, to survey the ionosphere and obtain parameters such as drifts, densities and composition; and the JULIA mode ...
- Equatorial ionosphere
- Drifts
- JULIA
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Por | Flores, Roberto; Milla, M.; Kuyeng, Karim; Hysell, D.L.; Chau, J.L. (2023 CEDAR Workshop, 2023)

Estimation of spectral parameters from oblique Equatorial Electrojet echoes using a double skewed Gaussian model at JRO

Coherent echoes from the equatorial electrojet (EEJ) region are detected at the Jicamarca Radio Observatory (JRO) by using an array of 16 Yagi antennas with a main beam pointed obliquely to the west with an elevation of about 35 deg. The spectrum of these observations are composed of two types of EEJ ...
- Equatorial electrojet
- Doppler shift
- Gaussian fitting
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Por | Tupac, Isaac; Milla, M.; Valladares, C.E.; Espinoza, J.C.; De la Jara, César; Arboleda, E. ... (2023 CEDAR Workshop, 2023-06)

Implementation of an Ionospheric Echoes Receiver using an SDR with GNU Radio to obtain vertical and oblique ionograms

The Jicamarca Radio Observatory (JRO) operates a vertical incidence pulsed ionospheric radar (VIPIR) dedicated to probing the equatorial ionosphere. This high-resolution system runs 24/7 and complements the suite of observations performed at JRO. As the VIPIR ionosonde operates with a wide beam antenna ...
- SDR Receiver
- Oblique ionograms
- GNU Radio
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Por | Pereyra, Antonio; Espinoza, M.; Tello, J.; Zevallos, M.; de Almeida, L.; Torre, E. (Instituto Geofísico del Perú, 2023-06-27)

OAUNI photometry of SN 2023ixf

We report photometry of Type II SN 2023ixf gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging in R filter was performed on two epochs under stable conditions (seeing ~1.7") and airmass lower than 2.5 (target with low altitude). Our integration times were 54x20s=1080s and ...
- Optical
- Supernovae
- Transient
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Por | Pereyra, Antonio; Espinoza, M.; Tello, J.; Zevallos, M.; Alvarado, D.; de Almeida, L. (R. E. Rutledge, 2023-06-10)

OAUNI photometry of SN 2023gfo

Multiband photometry of Type II SN 2023gfo on 2023-05-24 (UT) was gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging using VRI filters was performed under non-photometric conditions (seeing ~1.8") and airmass lower than 1.6. Total integration times of (45x20s=900s) for ...
- Optical
- Supernovae
- Transient
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Por | Verástegui, Joaquín; Rojas, John; Tupac, Isaac; Gonzales, Luis (IEEE, Institute of Electrical and Electronics Engineers, 2023)

Digital receiver modernization using FPGA and JESD204B interface for SDR applications

The latest data acquisition system running at the Jicamarca Radio Observatory (JRO) for the main radar has been used for more than seven years now. Although there are no major inconveniences on the performance, there have been some problems with internal interference which are related to the PCB design ...
- Protocols
- Observatories
- Data acquisition
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Por | Hysell, D.L.; Chau, J.L.; Conte, J.F.; Flores, Roberto; Milla, M.A. (URSI, 2022-10-16)

Inferring Zonal Wind Profiles in the Equatorial Electrojet From Coherent Scatter

Zonal wind estimates in the equatorial electrojet derived from coherent scatter echoes, specular meteor trail echoes, and optical limb scans are compared. While the three techniques exhibit broad overall agreement, significant differences in the results of the three techniques appear. The differences ...
- Zonal winds
- Equatorial Electrojet
- Specular meteors
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