PuMa, Pulsar Monitoring in Argentina, is a scientific collaboration dedicated to the radio-observation of pulsars -rapidly-rotating and highly-magnetized neutron stars- from the Southern Hemisphere. The team, integrated by scientist and technicians from the Argentine Institute of Radioastronomy (IAR) and from Rochester Institute of Technology (RIT), works with two 30-meters single-dish radio antennas at IAR. The main goal of this project is to perform a long-term observational campaign of pulsars to gain a better understanding of their nature. The team collaborates with NANOGrav members, monitoring milisecond pulsars in order to contribute to the detection of very low frequency gravitational waves through Pulsar Timing Array techniques.
We are developing the first group dedicated to pulsar science in Argentina. This includes studies on glitching pulsars, milisecond pulsars, pulsar timing array technique, dynamics of the interestellar medium, magnetars, and more. We are also interested in radio transients like Fast Radio Burst.
The IAR is a pioneer center for develpoments in radio astronomy and radio communications in Argentina.
We are actively working with members from the NANOGrav collaboration and the Rochester Institute of Technology.
The Argentine Institute of Radio Astronomy (IAR; Instituto Argentino de Radioastronomía) was founded in 1962 as a radio observatory with two 30-meter parabolic single-dish radio antenna (Antenna II was built later in 1977). Initially, the IAR's main goal was to make a high sensitivity neutral hydrogen survey of the southern sky; this survey ended satisfactorily in 2000 with a high-impact publication. Even though the Institute has been the center of intense scientific and technological activity since its creation, its radio antennas have not been employed in any scientific project since 2001. For the first time in over fifteen years, the IAR Antennas are being tuned-up to match the requirements of a newly formed team dedicated to observational pulsar astronomy. The development of tools and know-how from scratch makes it a very defying yet promising project.
The IAR has two 30 m single-dish antennas, Antenna I and Antenna II. We are currently performing observations using Antenna I with the same receiver used for the HI mapping survey. These radio telescopes cover a declination range from -90 degrees to -9 degrees and an hour angle range 4 hours. The angular resolution at 1420 MHz is 30 arcminutes. Since 2004, several updates and repairs were made, including a complete Front-End repairing in 2009 and a new set of positional encoders installed in 2014 to keep the tracking system up to date. The last addition was a Software Defined Radio (SDR) that allows to perform pulsar measurements from 2015. Antenna II has a newly developed receiver that would be fully operating in the early 2019.
Camino Belgrano, km 40, La Plata, Buenos Aires, Argentina