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Spectral Trends of Solar Bursts at Sub-THz Frequencies
(Springer, 2017-01)
Previous sub-THz studies were derived from single-event observations. We here analyze for the first time spectral trends for a larger collection of sub-THz bursts. The collection consists of a set of 16 moderate to small ...
Adquisición de datos con alta resolución temporal y control de la posición en radiotelescopios
(Programa “Cambio climático en Cuba: impactos, mitigación y adaptación”, 2013)
Las observaciones astronómicas, empleando radiotelescopios, tienen como principal objetivo medir las emisiones en varias frecuencias que provienen del medio interplanetario, fundamentalmente del Sol. El trabajo aborda una ...
On the origin of the jet-like radio/X-ray morphology of G290.1-0.8
(EDP Sciences, 2012-10)
Context. The origin and evolution of supernova remnants of the mixed-morphology class is not well understood. Several remnants present distorted radio or X-ray shells with jet-like structures. G290.1-0.8 (MSH 11-61A) belongs ...
Emissão de radiação eletromagnética não ionizante na cidade do Natal: caracterização, avaliação e modelamento com base na intensidade do campo elétrico e na taxa de exposição
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIAS DA SAÚDE, 2015-12-17)
The electromagnetic waves used in the telecommunication systems until the 1980’s
were considered by the governments environmental control organs as apparently
“clean” forms of energy, whose effects weren’t considered any ...
The Circumestellar Disk of the B0 Protostar Powering the HH 80-81 Radio Jet
(IOP Publishing, 2017-09)
We present subarcsecond angular resolution observations carried out with the Submillimeter Array (SMA) at 880 μm centered at the B0-type protostar GGD27 MM1, the driving source of the parsec scale HH 80-81 jet. We constrain ...
Spiral-like structure at the centre of nearby clusters of galaxies
(EDP SCIENCES S A, 2010)
Context. X-ray data analysis have found that fairly complex structures at cluster centres are more common than expected. Many of these structures have similar morphologies, which exhibit spiral-like substructure. Aims. It ...
An X-ray-selected active galactic nucleus at z=4.6 discovered by the CYDER survey
(UNIV CHICAGO PRESS, 2004-03-01)
We present the discovery of a high-redshift, X-ray-selected active galactic nucleus (AGN) by the Calan-Yale Deep Extragalactic Research ( CYDER) survey: CXOCY J033716.7-050153, located at z=4.61, the second high-redshift ...
TeV J2032+4130: a not-so-dark accelerator?
(Wiley Blackwell Publishing, Inc, 2008-12)
The HEGRA ã-ray source TeV J2032+4130 is considered the prototypical `dark accelerator´, since it was the first TeV source detected with no firm counterparts at lower frequencies. The Whipple collaboration observed this ...
Is the supernova remnant RX J1713.7-3946 a hadronic cosmic-ray accelerator?
(IOP Publishing, 2001-12)
The nonthermal supernova remnant (SNR) RX J1713.7-3946 has recently been shown to be a site of cosmic-ray (CR) electron acceleration to TeV energies. Here we present evidence that this remnant is also accelerating CR nuclei. ...