Thesis Defense
Student: Rafael Rechiche de Campos
Program: Meteorologia
Title: “Effects of MHD modes on protoplanetary accretion disks”
Advisor: Profa. Dra. Vera Jatenco Silva Pereira - IAG/USP
Judging Committee:
Committee's President: Profa. Dra. Vera Jatenco Silva Pereira - Orientadora - IAG/USP
- Profa. Dra. Jane Cristina Gregorio Hetem - IAG/USP
- Prof. Dr. Reinaldo Santos de Lima - IAG/USP
- Profa. Dra. Sandra Milena Conde Cuellar - Universidad Surcolombiana - by video
- Dr. Luís Henrique Sinki Kadowaki - by video
- Dra. Thais dos Santos Silva – Pós-Doutorando - IAG/USP
Abstract
Magneto-rotational instability (IMR) is believed to be responsible for the accretion observed in protostellar disks. For this to occur, the particles in the disk must be coupled to the magnetic field lines, thus requiring a minimum amount of ionization. In this work, we use the standard α model and show that the energy released by the damping of hydromagnetic waves can heat the plane middle of the disc, allowing IMR to act on a large part of the disc.
Keywords: Protostars, Protoestelar disks, hydromagnetic waves