Do Cosmos a Terra: Usando Python para desvendar os mistérios do Universo.

Do Cosmos a Terra: Usando Python paradesvendar os misterios do Universo.

Dr. Eduardo S. Pereira1

1Instituto Nacional de Pesquisas EspaciaisDivisao de Astrofsica

Disponvel em: http://pt.slideshare.net/duducosmos

09/Novembro/2015

Sumario

1 Introducao

2 Cosmos, ou A Evolucao do Universo.

3 Um pouco mais de Cosmologia e Astrofsica

4 PyCosmicStar

5 A Taxa Cosmica de Formacao Estelar e Os Buracos NegrosSupermassivos

6 Sol e Terra

7 Fim *.*

8 Referencias Bibliograficas

Introducao

O Framework de Trabalho.

Introducao


R 12

Rg + =8Gc4

T (1)

Introducao


Cosmos, ou A Evolucao do Universo.

O Modelo Cosmologico Padrao


Regioes de Formacao Estelar


Redshift

Um pouco mais de Cosmologia e Astrofsica

O Formalismo Tipo Press-Schechter

hierarquico.mp4Media File (video/mp4)

Um pouco mais de Cosmologia e Astrofsica

O Modelo de Formacao Estelar

Halos de materia escura sao pocos de potencial gravitacional;

Se o halo tiver massa maior que um certo limiar a formacaoestelar ira ocorrer;

Os primeiros halos capazes de formar estrelas seriam formadosem z 20 com massa da ordem de 106M[Salvadori, Schneider e Ferrara 2007]

PyCosmicStar

O codigo

PyCosmicStar

O codigo

from pycosmicstar.lcdmcosmology import lcdmcosmologyimport matplotlib.pyplot as plt

# I n s t a n c i n g a LCDM O b j e c t .lcdmUniverser = lcdmcosmology(omegam=0.24,omegab=0.04,omegal=0.73,h=0.7)

z = arange(0, 10.5, 0.1)

# The age o f t h e U n i v e r s e as a f u n c t i o n o f t h e r e d s h i f tplt.plot(z, [lcdmUniverser.age(zi) for zi in z])plt.xlabel(r"$z$ - Redshift")plt.ylabel(r"$t$ (yr)")plt.show()

PyCosmicStar

O codigo

PyCosmicStar

O codigo

from pycosmicstar.cosmicstarformation import cosmicstarformationfrom pycosmicstar.lcdmcosmology import lcdmcosmologyfrom pycosmicstar.observationalCSFR import ObservationalCSFR

import matplotlib.pyplot as pltfrom numpy import arange , array

z = arange(0, 20, 0.1)

# Cosmic S t a r Format ion Rate u s i n g# T i n k e r e t a l . dark h a l o e s mass f u n c t i o nmyCSFR_TK = cosmicstarformation(cosmology=lcdmcosmology ,massFunctionType="TK",delta_halo =200)

PyCosmicStar

O codigo

# Cosmic S t a r Format ion Rate u s i n g# P r e s s and S c h e c h t e r dark h a l o e s mass f u n c t i o nmyCSFR_PS = cosmicstarformation(cosmology=lcdmcosmology ,massFunctionType="PS")

# Cosmic S t a r Format ion Rate u s i n g# S e t h e t a l . dark h a l o e s mass f u n c t i o nmyCSFR_ST = cosmicstarformation(cosmology=lcdmcosmology)

PyCosmicStar

O codigo

csfrTK = array([myCSFR_TK.cosmicStarFormationRate(zi) for zi in z])csfrPS = array([myCSFR_PS.cosmicStarFormationRate(zi) for zi in z])csfrST = array([myCSFR_ST.cosmicStarFormationRate(zi) for zi in z])

PyCosmicStar

O codigo

obsCSFR = ObservationalCSFR()x, y = obsCSFR.csfredshift()xerr , yerr = obsCSFR.errorData()plt.errorbar(x, y, yerr=yerr , xerr=xerr , fmt=.)plt.plot(z, csfrTK , label="TK")plt.plot(z, csfrST , label="ST")plt.plot(z, csfrPS , label="PS")plt.legend(loc=4)plt.yscale(log)plt.ylabel(r$\dot{\rho}_{*}$( M$_{\odot}$Mpc${-3}$yr${-1}$))plt.xlabel(r$z$)plt.show()

PyCosmicStar

O codigo

PyCosmicStar

O codigo

http://duducosmos.github.io/pycosmicstar/index.html

http://duducosmos.github.io/pycosmicstar/index.html

PyCosmicStar

Nas nuvens

www.cosmicstarformation.com

www.cosmicstarformation.com

A Taxa Cosmica de Formacao Estelar e Os Buracos Negros Supermassivos

Buracos Negros Supermassivos

ngc4261.mpgMedia File (video/mpeg)


Buracos Negros Supermassivos na Nossa Galaxia

BuracoNegroGas.mpgMedia File (video/mpeg)


O Modelo e Concordante com as Observacoes

Sol e Terra

Coerencia Wavelet

http://duducosmos.github.io/PIWavelet/


Sol e Terra

Coerencia Wavelet

import numpy as npfrom piwavelet import piwavelet# G e n e r a t i o n o f t h e Random S i g n a l 1y1 = np.random.rand(100)# G e n e r a t i o n o f t h e Random S i g n a l 2y2 = np.random.rand(100)# Time s t e px = np.arange(0,100,1)# N o r m a l i z a t i o n o f t h e S i g n a l 1y1 = (y1-y1.mean())/y1.std()# N o r m a l i z a t i o n o f t h e S i g n a l 2y2 = (y2-y2.mean())/y2.std()# Wave le t Coherence A n a l y s i smyCoherence = piwavelet.wcoherence(y1,y2)

Sol e Terra

Coerencia Wavelet

# P l o t o f t h e Coherence MapmyCoherence.plot(t = x, title=Test,units=sec)# I f you want t o know t h e i n d i v i d u a l p r o p e r t i e s .Rsq,period ,scale ,coi,sig95=myCoherence()

Sol e Terra

Coerencia Wavelet



Fim *.*

Obrigado

Star Formation Dreams- Oleo sobretela. Em andamento.

http://pereirasomozartgallery.edupereira.webfactional.com/

https://www.facebook.com/pereirasomozagallery/

http://pereirasomozartgallery.edupereira.webfactional.com/http://pereirasomozartgallery.edupereira.webfactional.com/http://pereirasomozartgallery.edupereira.webfactional.com/https://www.facebook.com/pereirasomozagallery/https://www.facebook.com/pereirasomozagallery/

Referencias Bibliograficas

COPI, C. J. A stochastic approach to chemical evolution. Apj,v. 487, p. 704, out. 1997.

DAIGNE, F. et al. Hierarchical growth and satr formation:Enrichment, outflows and supernova rates. Apj, v. 647, p. 773786,ago. 2006.

HOPKINS, A. M. On the evolution of star-forming galaxies. APJ,American Physical Society, v. 615, p. 209221, nov. 2004.

HOPKINS, P. F.; RICHARDS, G. T.; HERNQUIST, L. Anobservational determination of the bolometric quasar luminosityfunction. Apj, v. 654, p. 731753, jan. 2007.

JENKINS, A. et al. The mass function of dark matter haloes. Mon.Not. R. Astron. Soc., v. 321, p. 372384, 2001.


PEREIRA, E. dos S.; MIRANDA, O. D. The role of the dark matterhaloes on the cosmic star formation rate. New Ast., v. 41, p. 4852,2015.

PEREIRA, E. S.; MIRANDA, O. D. Stochastic background ofgravitational waves generated by pre-galactic black holes. MNRAS,v. 401, p. 19241932, jan. 2010.

PEREIRA, E. S.; MIRANDA, O. D. Supermassive black holes:connecting the growth to the cosmic star formation rate. MNRASLetters, v. 418, p. L30L34., 2011.

PRESS, W. H.; SCHECHTER, P. Formation of galaxies andclusters of galaxies by self-similar gravitational condesation. Apj, p.425438, fev. 1974.

SALPETER, E. E. The luminousity function and stellar evolution.Apj, v. 121, p. 161167, 1955.


SALVADORI, S.; SCHNEIDER, R.; FERRARA, A. Cosmic stellarrelics in the galactic halo. MNRAS, v. 381, p. 647662, out. 2007.

SCALO, J. M. The stellar initial mass function. FundamentalsCosmic Phys., v. 11, p. 1278, maio 1986.

SHETH, R. K.; MO, H. J.; TORMEN, G. Ellipsoidal collapse and animproved model for the number and spatial distribuition of darkmatter haloes. Mon. Not. R. Astron, v. 323, p. 112, set. 2001.

IntroduoCosmos, ou A Evoluo do Universo.Um pouco mais de Cosmologia e AstrofsicaPyCosmicStarA Taxa Csmica de Formao Estelar e Os Buracos Negros SupermassivosSol e TerraFim *.*Referncias Bibliogrficas

Do Cosmos a Terra: Usando Python para desvendar os mistérios do Universo.

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