Ph.D. Student at Stockholm University, Astronomy Department. Interested in Reonization 🎆, Education🎓 and all round Cosmological Information! ✨
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ALT These models of the early Universe during reionization differ only in how they treat unresolved systems of neutral hydrogen. We find that the positions and evolution of these Lyman Limit systems significantly affect the duration and topology of reionization and might influence what we observe in the Ly-α forest.
ALT The Crab Nebula's complex oval structure lies against a black background. On the nebula’s exterior, particularly at the top left and bottom left, lie curtains of glowing red and orange fluffy material. Interior to this outer shell lie large-scale loops of mottled filaments of yellow-white and green, studded with clumps and knots. The central interior of the nebula glows brightly. Around and within the supernova remnant are many points of blue-white light in the Hubble image.
ALT The Crab Nebula's complex oval structure lies against a black background. On the nebula’s exterior, particularly at the top left and bottom left, lie curtains of glowing red and orange fluffy material. Interior to this outer shell lie large-scale loops of mottled filaments of yellow-white and green, studded with clumps and knots. Translucent thin ribbons of smoky white in the same area. Around and within the supernova remnant are many points of blue, red, and yellow light.
ALT detail from JWST's first deep field, a lensed galaxy with lots of star forming clumps.
ALT a figure from a paper by Traci Johnson, showing the source reconstruction model of a lensed galaxy on the right, and the field observed by HST on the left
