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Targets for LLAMA: study of variability of radio sources at 43 GHz (band 1) and search for correlation with interferometric images

Grant number: 14/07460-0
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): September 01, 2014
Effective date (End): June 30, 2019
Field of knowledge:Physical Sciences and Mathematics - Astronomy
Principal researcher:Zulema Abraham
Grantee:Pedro Paulo Bonetti Beaklini
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:11/51676-9 - LLAMA: a mm/submm radiotelescope in the Andes, in collaboration with Argentina, AP.TEM
Associated scholarship(s):15/12001-7 - NOEMA/LLAMA commissioning plan & the millimetric emission of the proto-planetary nebula CRL618, BE.EP.PD


The objective of this project is prepare targets to be study with LLAMA (Long Latin American Millimeter Array), that initially it will consist of one antenna installed in the Argentina size of Atacama desert, around 150 Km of ALMA (Atacama Large Millimeter Array). The radiotelescope of LLAMA project will operates at initial phase in frequencies of 43, 100 and 660 GHz, the first one is coincident with the band present at Itapetinga Radio Observatory. LLAMA will have two different observations modes: "single dish" and VLBI. In the single dish mode, it will be used to study Active Galactic Nuclei (AGNs) in all the frequencies band, increasing the work realized in the Itapetinga Observatory since years 70s, at frequencies of 22 and 43 GHz. LLAMA operation as VLBI will enable the AGNs studies in millisecond arc second scale that corresponds around 100 parsecs, allowing a north-south resolution that cannot be reached using only North Hemisphere telescopes. In this work, we will continue the monitoring programs started in the last 10 years; most of them were an important part of my graduate studies. The sources that we will study are SgrA*, Eta Carinae, Centaurus A and luminous quasars, as 3C273, 3C279, OJ287 and 1510-089. Beyond the monitoring program, we will analyze our results comparing with it was obtained in interferometric images. In some cases, as Eta Carina, we already realize observations with ALMA and the published results will be discussed together with next minimum of the 7mm light curve, predict to happen in 2014 July. In SgrA*, we will analyze our new observations and compare with the results of the report program NRAO-VLA Service Observing, with the main objective to understanding the flux excess detected in the single dish light curve, as we reported in a paper published in 2013. At last, this project is inside the LLAMA project, and we also have as objective the development and improvement of observing technique using multiples antennas, to be applied for either our data analyses and the first years of LLAMA. For that, we will keep a collaboration with IRAM (institute de Radioastronomie Millimétrique) staff, that administrates the Plareau de Bure Observatory, localized in France, and Pico de Valeta Observatory, localized in Spain.

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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ABRAHAM, ZULEMA; BEAKLINI, PEDRO P. B.; COX, PIERRE; FALCETA-GONCALVES, DIEGO; NYMAN, LARS-AKE. eta Carinae: high angular resolution continuum, H30 alpha and He30 alpha ALMA images. Monthly Notices of the Royal Astronomical Society, v. 499, n. 2, p. 2493-2512, DEC 2020. Web of Science Citations: 0.
BEAKLINI, PEDRO P. B.; MENDOZA, EDGAR; CANELO, CARLA M.; ALEMAN, ISABEL; MERELLO, MANUEL; KONG, SHUO; NAVARETE, FELIPE; JANOT-PACHECO, EDUARDO; ABRAHAM, ZULEMA; LEPINE, JACQUES R. D.; DE ALMEIDA, AMAURY A.; FRIACA, AMANCIO C. S. Sulphur-bearing and complex organic molecules in an infrared cold core. Monthly Notices of the Royal Astronomical Society, v. 491, n. 1, p. 427-439, JAN 2020. Web of Science Citations: 0.
BEAKLINI, PEDRO P. B.; DOMINICI, TANIA P.; ABRAHAM, ZULEMA; MOTTER, JULIANA C. Multiwavelength analysis of brightness variations of 3C 279: probing the relativistic jet structure and its evolution. Astronomy & Astrophysics, v. 626, JUN 17 2019. Web of Science Citations: 1.
DIAZ, MARCOS P.; ABRAHAM, ZULEMA; RIBEIRO, VALERIO A. R. M.; BEAKLINI, PEDRO P. B.; TAKEDA, LARISSA. The structure of a recent nova shell as observed by ALMA. Monthly Notices of the Royal Astronomical Society, v. 480, n. 1, p. L54-L57, OCT 2018. Web of Science Citations: 2.
BEAKLINI, PEDRO P. B.; DOMINICI, TANIA P.; ABRAHAM, ZULEMA. Optical Polarimetry and Radio Observations of PKS1510-089 between 2009 and 2013. GALAXIES, v. 6, n. 1 MAR 2018. Web of Science Citations: 1.
BEAKLINI, PEDRO P. B.; DOMINICI, TANIA P.; ABRAHAM, ZULEMA. Multiwavelength flaring activity of PKS 1510-089. Astronomy & Astrophysics, v. 606, OCT 17 2017. Web of Science Citations: 3.

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