130 GeV gamma line-new physics? DM-detectivework-Lisanti videos

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130 GeV gamma line--new physics? DM-detectivework--Lisanti videos

An interesting cluster of new topics come out in two August 2012 PIRSA video talks by Mariangela Lisanti.
http://pirsa.org/12080010
Illuminating the 130 GeV Gamma Line with Continuum Photons
Speaker(s): Mariangela Lisanti
Abstract: There is evidence for a 130 GeV gamma-ray line at the Galactic Center in the Fermi Large Area Telescope data. Dark matter candidates that explain this feature should also annihilate to Standard Model particles, resulting in a continuous spectrum of photons. To study this continuum, we analyze the Fermi... read more
Date: 07/08/2012 - 1:00 pm
Series: Particle Group Meeting

http://pirsa.org/12080005
A Flow of Dark Matter Debris: Exploring New Possibilities for Substructure
Speaker(s): Mariangela Lisanti
Abstract: Tidal stripping of dark matter from subhalos falling into the Milky Way produces narrow, cold tidal streams as well as more spatially extended "debris flows'' in the form of shells, sheets, and plumes.Here we focus on the debris flow in the Via Lactea II simulation, and show that this incompletely ... read more
Date: 07/08/2012 - 11:00 am
Series: Cosmology & Gravitation
 
https://arxiv.org/pdf/2503.09804 From the abstract: ... Our derivation uses both EE and the Newtonian approximation of EE in Part I, to describe semi-classically in Part II the advection of DM, created at the level of the universe, into galaxies and clusters thereof. This advection happens proportional with their own classically generated gravitational field g, due to self-interaction of the gravitational field. It is based on the universal formula ρD =λgg′2 for the densityρ D of DM...
Many of us have heard of "twistors", arguably Roger Penrose's biggest contribution to theoretical physics. Twistor space is a space which maps nonlocally onto physical space-time; in particular, lightlike structures in space-time, like null lines and light cones, become much more "local" in twistor space. For various reasons, Penrose thought that twistor space was possibly a more fundamental arena for theoretical physics than space-time, and for many years he and a hardy band of mostly...

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