Abstract
Context. The Argentine Institute of Radio astronomy (IAR) is equipped
with two single-dish 30 m radio antennas capable of performing daily
observations of pulsars and radio transients in the southern hemisphere
at 1.4 GHz. Aims: We aim to introduce to the international
community the upgrades performed and to show that the IAR observatory
has become suitable for investigations in numerous areas of pulsar radio
astronomy, such as pulsar timing arrays, targeted searches of continuous
gravitational waves sources, monitoring of magnetars and glitching
pulsars, and studies of a short time scale interstellar scintillation.
Methods: We refurbished the two antennas at IAR to achieve
high-quality timing observations. We gathered more than 1000 h of
observations with both antennas in order to study the timing precision
and sensitivity they can achieve. Results: We introduce the new
developments for both radio telescopes at IAR. We present daily
observations of the millisecond pulsar J0437-4715 with timing precision
better than 1 μs. We also present a follow-up of the reactivation of
the magnetar XTE J1810-197 and the measurement and monitoring of the
latest (Feb. 1, 2019) glitch of the Vela pulsar (J0835-4510).
Conclusions: We show that IAR is capable of performing pulsar monitoring
in the 1.4 GHz radio band for long periods of time with a daily cadence.
This opens up the possibility of pursuing several goals in pulsar
science, including coordinated multi-wavelength observations with other
observatories. In particular, daily observations of the millisecond
pulsar J0437-4715 would increase the sensitivity of pulsar timing
arrays. We also show IAR's great potential for studying targets of
opportunity and transient phenomena, such as magnetars, glitches, and
fast-radio-burst sources.
Original language | English |
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Article number | A84 |
Number of pages | 12 |
Journal | Astronomy & astrophysics |
Volume | 633 |
DOIs | |
Publication status | Published - 1-Jan-2020 |
Keywords
- instrumentation: detectors
- methods: observational
- pulsars: general
- telescopes
- SOUTHERN SKY
- MAGNETAR
- EMISSION
- SEARCH
- SCINTILLATION
- LOCALIZATION
- DISCOVERY
- GLITCHES
- BURSTS
- TIME