Search Results - "Peter, Annika H. G."

Evidence for a New Component of High-Energy Solar Gamma-Ray Production by Linden, Tim, Zhou, Bei, Beacom, John F, Peter, Annika H G, Ng, Kenny C Y, Tang, Qing-Wen

“…The observed multi-GeV γ-ray emission from the solar disk-sourced by hadronic cosmic rays interacting with gas and affected by complex magnetic fields-is not…”
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Missing Satellites Problem: Completeness Corrections to the Number of Satellite Galaxies in the Milky Way are Consistent with Cold Dark Matter Predictions by Kim, Stacy Y, Peter, Annika H G, Hargis, Jonathan R

“…A critical challenge to the cold dark matter (CDM) paradigm is that there are fewer satellites observed around the Milky Way than found in simulations of dark…”
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Cold dark matter: Controversies on small scales by Weinberg, David H, James S. Bullock, Fabio Governato, Rachel Kuzio de Naray, Annika H. G. Peter

“…The cold dark matter (CDM) cosmological model has been remarkably successful in explaining cosmic structure over an enormous span of redshift, but it has faced…”
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Gravothermal Solutions of SIDM Halos: Mapping from Constant to Velocity-dependent Cross Section by Yang, Shengqi, Du, Xiaolong, Zeng, Zhichao Carton, Benson, Andrew, Jiang, Fangzhou, Nadler, Ethan O., Peter, Annika H. G.

“…Abstract The scale-free gravothermal fluid formalism has long proved effective in describing the evolution of self-interacting dark matter halos with a…”
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Closing the Gap between Observed Low-mass Galaxy H i Kinematics and Cold Dark Matter Predictions by Sardone, Amy, Peter, Annika H. G., Brooks, Alyson M., Kaczmarek, Jane

“…Abstract Testing the standard cosmological model (ΛCDM) at small scales is challenging. Galaxies that inhabit low-mass dark matter halos provide an ideal test…”
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Infall times for Milky Way satellites from their present-day kinematics by Rocha, Miguel, Peter, Annika H. G., Bullock, James

“…Abstract We analyse subhaloes in the Via Lactea II (VL2) cosmological simulation to look for correlations among their infall times and z = 0 dynamical…”
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Cosmological simulations of decaying dark matter: implications for small-scale structure of dark matter haloes by Wang, Mei-Yu, Peter, Annika H. G., Strigari, Louis E., Zentner, Andrew R., Arant, Bryan, Garrison-Kimmel, Shea, Rocha, Miguel

“…We present a set of N-body simulations of a class of models in which an unstable dark matter particle decays into a stable dark matter particle and a…”
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Effect of gravitational focusing on annual modulation in dark-matter direct-detection experiments by Lee, Samuel K, Lisanti, Mariangela, Peter, Annika H G, Safdi, Benjamin R

“…The scattering rate in dark-matter direct-detection experiments should modulate annually due to Earth's orbit around the Sun. The rate is typically thought to…”
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Hubble Space Telescope Observations of Two Faint Dwarf Satellites of Nearby LMC Analogs from MADCASH by Carlin, Jeffrey L., Mutlu-Pakdil, Burçin, Crnojević, Denija, Garling, Christopher T., Karunakaran, Ananthan, Peter, Annika H. G., Tollerud, Erik, Forbes, Duncan A., Hargis, Jonathan R., Lim, Sungsoon, Romanowsky, Aaron J., Sand, David J., Spekkens, Kristine, Strader, Jay

“…Abstract We present a deep Hubble Space Telescope (HST) imaging study of two dwarf galaxies in the halos of Local Volume Large Magellanic Cloud (LMC) analogs…”
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A Nonparametric Morphological Analysis of Hα Emission in Bright Dwarfs Using the Merian Survey by Mintz, Abby, Greene, Jenny E., Kado-Fong, Erin, Danieli, Shany, Li, Jiaxuan, Luo, Yifei, Leauthaud, Alexie, Baldassare, Vivienne, Huang, Song, Peter, Annika H. G., Bhattacharyya, Joy, Li, Mingyu, Pan, Yue

“…Abstract Using medium-band imaging from the newly released Merian Survey, we conduct a nonparametric morphological analysis of H α emission maps and stellar…”
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Small-scale Magnetic Fields Are Critical to Shaping Solar Gamma-Ray Emission by Li, Jung-Tsung, Beacom, John F., Griffith, Spencer, Peter, Annika H. G.

“…Abstract The Sun is a bright gamma-ray source due to hadronic cosmic-ray interactions with solar gas. While it is known that incoming cosmic rays must…”
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The LBT satellites of Nearby Galaxies Survey (LBT-SONG): the satellite population of NGC 628 by Davis, A Bianca, Nierenberg, Anna M, Peter, Annika H G, Garling, Christopher T, Greco, Johnny P, Kochanek, Christopher S, Utomo, Dyas, Casey, Kirsten J, Pogge, Richard W, Roberts, Daniella M, Sand, David J, Sardone, Amy

“…ABSTRACT We present the first satellite system of the Large Binocular Telescope Satellites Of Nearby Galaxies Survey (LBT-SONG), a survey to characterize the…”
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Hyper Wide Field Imaging of the Local Group Dwarf Irregular Galaxy IC 1613: An Extended Component of Metal-poor Stars by Pucha, Ragadeepika, Carlin, Jeffrey L., Willman, Beth, Strader, Jay, Sand, David J., Bechtol, Keith, Brodie, Jean P., Crnojevi, Denija, Forbes, Duncan A., Garling, Christopher, Hargis, Jonathan, Peter, Annika H. G., Romanowsky, Aaron J.

“…Stellar halos offer fossil evidence for hierarchical structure formation. Since halo assembly is predicted to be scale-free, stellar halos around low-mass…”
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Cosmological simulations with self-interacting dark matter - II. Halo shapes versus observations by Peter, Annika H. G., Rocha, Miguel, Bullock, James S., Kaplinghat, Manoj

“…If dark matter has a large self-interaction scattering cross-section, then interactions among dark-matter particles will drive galaxy and cluster haloes to…”
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In the wake of dark giants: new signatures of dark matter self-interactions in equal-mass mergers of galaxy clusters by Kim, Stacy Y., Peter, Annika H. G., Wittman, David

“…Abstract Merging galaxy clusters have been touted as one of the best probes for constraining self-interacting dark matter, but few simulations exist to back up…”
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Cosmological simulations with self-interacting dark matter - I. Constant-density cores and substructure by Rocha, Miguel, Peter, Annika H. G., Bullock, James S., Kaplinghat, Manoj, Garrison-Kimmel, Shea, Oñorbe, Jose, Moustakas, Leonidas A.

“…We use cosmological simulations to study the effects of self-interacting dark matter (SIDM) on the density profiles and substructure counts of dark-matter…”
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Core-collapse, evaporation, and tidal effects: the life story of a self-interacting dark matter subhalo by Zeng, Zhichao Carton, Peter, Annika H G, Du, Xiaolong, Benson, Andrew, Kim, Stacy, Jiang, Fangzhou, Cyr-Racine, Francis-Yan, Vogelsberger, Mark

“…ABSTRACT Self-interacting dark matter (SIDM) cosmologies admit an enormous diversity of dark matter (DM) halo density profiles, from low-density cores to…”
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Enhanced tidal stripping of satellites in the galactic halo from dark matter self-interactions by Dooley, Gregory A, Peter, Annika H G, Vogelsberger, Mark, Zavala, Jesus, Frebel, Anna

“…We investigate the effects of self-interacting dark matter (SIDM) on the tidal stripping and evaporation of satellite galaxies in a Milky Way-like host. We use…”
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Radial Distributions of Dwarf Satellite Systems in the Local Volume by Carlsten, Scott G., Greene, Jenny E., Peter, Annika H. G., Greco, Johnny P., Beaton, Rachael L.

“…The radial spatial distribution of low-mass satellites around a Milky Way (MW)-like host is an important benchmark for simulations of small-scale structure…”
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A semi-analytic study of self-interacting dark-matter haloes with baryons by Jiang, Fangzhou, Benson, Andrew, Hopkins, Philip F, Slone, Oren, Lisanti, Mariangela, Kaplinghat, Manoj, Peter, Annika H G, Zeng, Zhichao Carton, Du, Xiaolong, Yang, Shengqi, Shen, Xuejian

“…ABSTRACT We combine the isothermal Jeans model and the model of adiabatic halo contraction into a semi-analytic procedure for computing the density profile of…”
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