Daniel's PhD thesis in astrophysics is the best of 2018 in Spain

The Spanish Astronomical Society awards the prize for the best PhD thesis  in astrophysics of 2018 to Dr. Daniel Nóbrega Siverio, one year-old postdoc at RoCS. 

Dr. Daniel Nóbrega Siverio, postdoc at RoCS.

Postdoc of the Rosseland Center for Solar Physics (RoCS), Dr. Daniel Nóbrega Siverio is the ex-aequo winner of the 2019 Prize for PhD thesis that were defended during 2018.

– "It is a great honour to receive this prize taking into account the high-level thesis of other colleagues. I think that all kind of recognition for someone's work is always motivating. It means there is a part of the community that consider that the results I have obtained have an important impact on the research field", confesses Daniel.

A fourfold perspective for studying solar surges

The title of Daniel's PhD thesis is:

"Eruptive phenomena in the solar atmosphere: radiation-MHD modeling and code development",

with Prof. Fernando Moreno Insertis and Dr. Juan Martínez Sykora as supervisors. The work was carried out at the Instituto de Astrofísica de Canarias (IAC) and the Universidad de La Laguna (ULL).

The thesis was devoted to address the solar surge phenomenon.

– " [...] a kind of chromospheric ejection whose understanding has progressed very slowly even though observationally known for many decades now", points out Daniel.

plot av surges
Temperature map from the numerical experiment by Nóbrega-Siverio et al. 2018 in which we can see a solar surge: the cool elongated vertical structure that resembles a fang composed of plasma that has emerged from the solar interior. An image of the Earth puts into context the huge scale of this phenomenon (note that 1 Mm = 1000 km).

Daniel studied the surge phenomenon by combining theory (through numerical experiments using the Bifrost code), observations (by means of data obtained with the IRIS satellite and SST), forward modelling (to compare the experiment with the observations), as well as code development.

– "I think that the strength of this thesis is that it encompasses different perspectives". 

A well deserved prize!

The Spanish Astronomical Society (SEA) gathers together more than 800 professionals in astrophysics in Spain. Its main goal is to promote the development of astronomy and astrophysics in the country. 

Since 2000, SEA annually awards a prize to the best PhD thesis in Astronomy and Astrophysics from those that were disputed during the previous year.

Daniel will have the chance to present his thesis work and collect the award during the inaugural ceremony of the Spanish Astronomical Society biannual meeting to be held in La Laguna (Tenerife, Spain) in 2020.

– "It is a great opportunity to share new results with researchers from other fields in astrophysics and learn from each other. It may be also a nice chance to inspire Spanish PhD students", says thrilled Daniel.


By Martina D'Angelo
Published July 2, 2019 3:42 PM - Last modified Apr. 21, 2021 10:49 AM