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8 results on '"Chen Xingang"'

1. Classical cosmological collider physics and primordial features

Author

Chen, Xingang, Ebadi, Reza, and Kumar, Soubhik

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, cosmology of theories beyond the SM, inflation, non-gaussianity, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Astronomical sciences, Particle and high energy physics
Abstract

Features in the inflationary landscape can inject extra energies to inflation models and produce on-shell particles with masses much larger than the Hubble scale of inflation. This possibility extends the energy reach of the program of cosmological collider physics, in which signals associated with these particles are generically Boltzmann-suppressed. We study the mechanisms of this classical cosmological collider in two categories of primordial features. In the first category, the primordial feature is classical oscillation, which includes the case of coherent oscillation of a massive field and the case of oscillatory features in the inflationary potential. The second category includes any sharp feature in the inflation model. All these classical features can excite unsuppressed quantum modes of other heavy fields which leave observational signatures in primordial non-Gaussianities, including the information about the particle spectra of these heavy degrees of freedom.

Published
2022

2. Inflation and Dark Energy from spectroscopy at $z > 2$

Author

Ferraro, Simone, Wilson, Michael J, Abidi, Muntazir, Alonso, David, Ansarinejad, Behzad, Armstrong, Robert, Asorey, Jacobo, Avelino, Arturo, Baccigalupi, Carlo, Bandura, Kevin, Battaglia, Nicholas, Bavdhankar, Chetan, Bernal, José Luis, Beutler, Florian, Biagetti, Matteo, Blanc, Guillermo A, Blazek, Jonathan, Bolton, Adam S, Borrill, Julian, Frye, Brenda, Buckley-Geer, Elizabeth, Bull, Philip, Burgess, Cliff, Byrnes, Christian T, Cai, Zheng, Castander, Francisco J, Castorina, Emanuele, Chang, Tzu-Ching, Chaves-Montero, Jonás, Chen, Shi-Fan, Chen, Xingang, Balland, Christophe, Yèche, Christophe, Cohn, JD, Coulton, William, Courtois, Helene, Croft, Rupert AC, Cyr-Racine, Francis-Yan, D'Amico, Guido, Dawson, Kyle, Delabrouille, Jacques, Dey, Arjun, Doré, Olivier, Douglass, Kelly A, Yutong, Duan, Dvorkin, Cora, Eggemeier, Alexander, Eisenstein, Daniel, Fan, Xiaohui, Ferreira, Pedro G, Font-Ribera, Andreu, Foreman, Simon, García-Bellido, Juan, Gerbino, Martina, Gluscevic, Vera, Gontcho, Satya Gontcho A, Green, Daniel, Guy, Julien, Hahn, ChangHoon, Hanany, Shaul, Handley, Will, Hathi, Nimish, Hawken, Adam J, Hernández-Aguayo, César, Hložek, Renée, Huterer, Dragan, Ishak, Mustapha, Kamionkowski, Marc, Karagiannis, Dionysios, Keeley, Ryan E, Kehoe, Robert, Khatri, Rishi, Kim, Alex, Kneib, Jean-Paul, Kollmeier, Juna A, Kovetz, Ely D, Krause, Elisabeth, Krolewski, Alex, L'Huillier, Benjamin, Landriau, Martin, Levi, Michael, Liguori, Michele, Linder, Eric, Lukić, Zarija, Macorra, Axel de la, Plazas, Andrés A, Marshall, Jennifer L, Martini, Paul, Masui, Kiyoshi, McDonald, Patrick, Meerburg, P Daniel, Meyers, Joel, Mirbabayi, Mehrdad, Moustakas, John, Myers, Adam D, Palanque-Delabrouille, Nathalie, Newburgh, Laura, Newman, Jeffrey A, Niz, Gustavo, and Padmanabhan, Hamsa

Subjects
astro-ph.CO, astro-ph.GA
Abstract

The expansion of the Universe is understood to have accelerated during twoepochs: in its very first moments during a period of Inflation and much morerecently, at $z < 1$, when Dark Energy is hypothesized to drive cosmicacceleration. The undiscovered mechanisms behind these two epochs representsome of the most important open problems in fundamental physics. The largecosmological volume at $2 < z < 5$, together with the ability to efficientlytarget high-$z$ galaxies with known techniques, enables large gains in thestudy of Inflation and Dark Energy. A future spectroscopic survey can test theGaussianity of the initial conditions up to a factor of ~50 better than ourcurrent bounds, crossing the crucial theoretical threshold of$\sigma(f_{NL}^{\rm local})$ of order unity that separates single field andmulti-field models. Simultaneously, it can measure the fraction of Dark Energyat the percent level up to $z = 5$, thus serving as an unprecedented test ofthe standard model and opening up a tremendous discovery space.

Published
2019

3. Inflation and Dark Energy from spectroscopy at $z > 2$

Author

Ferraro, Simone, Wilson, Michael J, Abidi, Muntazir, Alonso, David, Ansarinejad, Behzad, Armstrong, Robert, Asorey, Jacobo, Avelino, Arturo, Baccigalupi, Carlo, Bandura, Kevin, Battaglia, Nicholas, Bavdhankar, Chetan, Bernal, José Luis, Beutler, Florian, Biagetti, Matteo, Blanc, Guillermo A, Blazek, Jonathan, Bolton, Adam S, Borrill, Julian, Frye, Brenda, Buckley-Geer, Elizabeth, Bull, Philip, Burgess, Cliff, Byrnes, Christian T, Cai, Zheng, Castander, Francisco J, Castorina, Emanuele, Chang, Tzu-Ching, Chaves-Montero, Jonás, Chen, Shi-Fan, Chen, Xingang, Balland, Christophe, Yèche, Christophe, Cohn, JD, Coulton, William, Courtois, Helene, Croft, Rupert AC, Cyr-Racine, Francis-Yan, D'Amico, Guido, Dawson, Kyle, Delabrouille, Jacques, Dey, Arjun, Doré, Olivier, Douglass, Kelly A, Yutong, Duan, Dvorkin, Cora, Eggemeier, Alexander, Eisenstein, Daniel, Fan, Xiaohui, Ferreira, Pedro G, Font-Ribera, Andreu, Foreman, Simon, García-Bellido, Juan, Gerbino, Martina, Gluscevic, Vera, Gontcho, Satya Gontcho A, Green, Daniel, Guy, Julien, Hahn, ChangHoon, Hanany, Shaul, Handley, Will, Hathi, Nimish, Hawken, Adam J, Hernández-Aguayo, César, Hložek, Renée, Huterer, Dragan, Ishak, Mustapha, Kamionkowski, Marc, Karagiannis, Dionysios, Keeley, Ryan E, Kehoe, Robert, Khatri, Rishi, Kim, Alex, Kneib, Jean-Paul, Kollmeier, Juna A, Kovetz, Ely D, Krause, Elisabeth, Krolewski, Alex, L'Huillier, Benjamin, Landriau, Martin, Levi, Michael, Liguori, Michele, Linder, Eric, Lukić, Zarija, Macorra, Axel de la, Plazas, Andrés A, Marshall, Jennifer L, Martini, Paul, Masui, Kiyoshi, McDonald, Patrick, Meerburg, P Daniel, Meyers, Joel, Mirbabayi, Mehrdad, Moustakas, John, Myers, Adam D, Palanque-Delabrouille, Nathalie, Newburgh, Laura, Newman, Jeffrey A, Niz, Gustavo, and Padmanabhan, Hamsa

Subjects
astro-ph.CO, astro-ph.GA
Abstract

The expansion of the Universe is understood to have accelerated during twoepochs: in its very first moments during a period of Inflation and much morerecently, at $z < 1$, when Dark Energy is hypothesized to drive cosmicacceleration. The undiscovered mechanisms behind these two epochs representsome of the most important open problems in fundamental physics. The largecosmological volume at $2 < z < 5$, together with the ability to efficientlytarget high-$z$ galaxies with known techniques, enables large gains in thestudy of Inflation and Dark Energy. A future spectroscopic survey can test theGaussianity of the initial conditions up to a factor of ~50 better than ourcurrent bounds, crossing the crucial theoretical threshold of$\sigma(f_{NL}^{\rm local})$ of order unity that separates single field andmulti-field models. Simultaneously, it can measure the fraction of Dark Energyat the percent level up to $z = 5$, thus serving as an unprecedented test ofthe standard model and opening up a tremendous discovery space.

Published
2019

4. Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics

Author

Green, Daniel, Amin, Mustafa A, Meyers, Joel, Wallisch, Benjamin, Abazajian, Kevork N, Abidi, Muntazir, Adshead, Peter, Ahmed, Zeeshan, Ansarinejad, Behzad, Armstrong, Robert, Baccigalupi, Carlo, Bandura, Kevin, Barron, Darcy, Battaglia, Nicholas, Baumann, Daniel, Bechtol, Keith, Bennett, Charles, Benson, Bradford, Beutler, Florian, Bischoff, Colin, Bleem, Lindsey, Bond, J Richard, Borrill, Julian, Buckley-Geer, Elizabeth, Burgess, Cliff, Carlstrom, John E, Castorina, Emanuele, Challinor, Anthony, Chen, Xingang, Cooray, Asantha, Coulton, William, Craig, Nathaniel, Crawford, Thomas, Cyr-Racine, Francis-Yan, D'Amico, Guido, Demarteau, Marcel, Doré, Olivier, Yutong, Duan, Dunkley, Joanna, Dvorkin, Cora, Ellison, John, Engelen, Alexander van, Escoffier, Stephanie, Essinger-Hileman, Tom, Fabbian, Giulio, Filippini, Jeffrey, Flauger, Raphael, Foreman, Simon, Fuller, George, Garcia, Marcos AG, García-Bellido, Juan, Gerbino, Martina, Gluscevic, Vera, Gontcho, Satya Gontcho A, Górski, Krzysztof M, Grin, Daniel, Grohs, Evan, Gudmundsson, Jon E, Hanany, Shaul, Handley, Will, Hill, J Colin, Hirata, Christopher M, Hložek, Renée, Holder, Gilbert, Horiuchi, Shunsaku, Huterer, Dragan, Kadota, Kenji, Kamionkowski, Marc, Keeley, Ryan E, Khatri, Rishi, Kisner, Theodore, Kneib, Jean-Paul, Knox, Lloyd, Koushiappas, Savvas M, Kovetz, Ely D, L'Huillier, Benjamin, Lahav, Ofer, Lattanzi, Massimiliano, Lee, Hayden, Liguori, Michele, Lin, Tongyan, Loverde, Marilena, Madhavacheril, Mathew, Masui, Kiyoshi, McMahon, Jeff, McQuinn, Matthew, Meerburg, P Daniel, Mirbabayi, Mehrdad, Motloch, Pavel, Mukherjee, Suvodip, Munõz, Julian B, Nagy, Johanna, Newburgh, Laura, Niemack, Michael D, Nomerotski, Andrei, Page, Lyman, Piacentni, Francesco, Pierpaoli, Elena, Pogosian, Levon, and Pryke, Clement

Subjects
astro-ph.CO, hep-ph
Abstract

The hot dense environment of the early universe is known to have producedlarge numbers of baryons, photons, and neutrinos. These extreme conditions mayhave also produced other long-lived species, including new light particles(such as axions or sterile neutrinos) or gravitational waves. The gravitationaleffects of any such light relics can be observed through their unique imprintin the cosmic microwave background (CMB), the large-scale structure, and theprimordial light element abundances, and are important in determining theinitial conditions of the universe. We argue that future cosmologicalobservations, in particular improved maps of the CMB on small angular scales,can be orders of magnitude more sensitive for probing the thermal history ofthe early universe than current experiments. These observations offer a uniqueand broad discovery space for new physics in the dark sector and beyond, evenwhen its effects would not be visible in terrestrial experiments or inastrophysical environments. A detection of an excess light relic abundancewould be a clear indication of new physics and would provide the first directinformation about the universe between the times of reheating and neutrinodecoupling one second later.

Published
2019

5. Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics

Author

Green, Daniel, Amin, Mustafa A, Meyers, Joel, Wallisch, Benjamin, Abazajian, Kevork N, Abidi, Muntazir, Adshead, Peter, Ahmed, Zeeshan, Ansarinejad, Behzad, Armstrong, Robert, Baccigalupi, Carlo, Bandura, Kevin, Barron, Darcy, Battaglia, Nicholas, Baumann, Daniel, Bechtol, Keith, Bennett, Charles, Benson, Bradford, Beutler, Florian, Bischoff, Colin, Bleem, Lindsey, Bond, J Richard, Borrill, Julian, Buckley-Geer, Elizabeth, Burgess, Cliff, Carlstrom, John E, Castorina, Emanuele, Challinor, Anthony, Chen, Xingang, Cooray, Asantha, Coulton, William, Craig, Nathaniel, Crawford, Thomas, Cyr-Racine, Francis-Yan, D'Amico, Guido, Demarteau, Marcel, Doré, Olivier, Yutong, Duan, Dunkley, Joanna, Dvorkin, Cora, Ellison, John, Engelen, Alexander van, Escoffier, Stephanie, Essinger-Hileman, Tom, Fabbian, Giulio, Filippini, Jeffrey, Flauger, Raphael, Foreman, Simon, Fuller, George, Garcia, Marcos AG, García-Bellido, Juan, Gerbino, Martina, Gluscevic, Vera, Gontcho, Satya Gontcho A, Górski, Krzysztof M, Grin, Daniel, Grohs, Evan, Gudmundsson, Jon E, Hanany, Shaul, Handley, Will, Hill, J Colin, Hirata, Christopher M, Hložek, Renée, Holder, Gilbert, Horiuchi, Shunsaku, Huterer, Dragan, Kadota, Kenji, Kamionkowski, Marc, Keeley, Ryan E, Khatri, Rishi, Kisner, Theodore, Kneib, Jean-Paul, Knox, Lloyd, Koushiappas, Savvas M, Kovetz, Ely D, L'Huillier, Benjamin, Lahav, Ofer, Lattanzi, Massimiliano, Lee, Hayden, Liguori, Michele, Lin, Tongyan, Loverde, Marilena, Madhavacheril, Mathew, Masui, Kiyoshi, McMahon, Jeff, McQuinn, Matthew, Meerburg, P Daniel, Mirbabayi, Mehrdad, Motloch, Pavel, Mukherjee, Suvodip, Munõz, Julian B, Nagy, Johanna, Newburgh, Laura, Niemack, Michael D, Nomerotski, Andrei, Page, Lyman, Piacentni, Francesco, Pierpaoli, Elena, Pogosian, Levon, and Pryke, Clement

Subjects
astro-ph.CO, hep-ph
Abstract

The hot dense environment of the early universe is known to have producedlarge numbers of baryons, photons, and neutrinos. These extreme conditions mayhave also produced other long-lived species, including new light particles(such as axions or sterile neutrinos) or gravitational waves. The gravitationaleffects of any such light relics can be observed through their unique imprintin the cosmic microwave background (CMB), the large-scale structure, and theprimordial light element abundances, and are important in determining theinitial conditions of the universe. We argue that future cosmologicalobservations, in particular improved maps of the CMB on small angular scales,can be orders of magnitude more sensitive for probing the thermal history ofthe early universe than current experiments. These observations offer a uniqueand broad discovery space for new physics in the dark sector and beyond, evenwhen its effects would not be visible in terrestrial experiments or inastrophysical environments. A detection of an excess light relic abundancewould be a clear indication of new physics and would provide the first directinformation about the universe between the times of reheating and neutrinodecoupling one second later.

Published
2019

6. Primordial Non-Gaussianity

Author

Meerburg, P Daniel, Green, Daniel, Abidi, Muntazir, Amin, Mustafa A, Adshead, Peter, Ahmed, Zeeshan, Alonso, David, Ansarinejad, Behzad, Armstrong, Robert, Avila, Santiago, Baccigalupi, Carlo, Baldauf, Tobias, Ballardini, Mario, Bandura, Kevin, Bartolo, Nicola, Battaglia, Nicholas, Baumann, Daniel, Bavdhankar, Chetan, Bernal, José Luis, Beutler, Florian, Biagetti, Matteo, Bischoff, Colin, Blazek, Jonathan, Bond, J Richard, Borrill, Julian, Bouchet, François R, Bull, Philip, Burgess, Cliff, Byrnes, Christian, Calabrese, Erminia, Carlstrom, John E, Castorina, Emanuele, Challinor, Anthony, Chang, Tzu-Ching, Chaves-Montero, Jonas, Chen, Xingang, Yeche, Christophe, Cooray, Asantha, Coulton, William, Crawford, Thomas, Chisari, Elisa, Cyr-Racine, Francis-Yan, D'Amico, Guido, de Bernardis, Paolo, de la Macorra, Axel, Doré, Olivier, Duivenvoorden, Adri, Dunkley, Joanna, Dvorkin, Cora, Eggemeier, Alexander, Escoffier, Stephanie, Essinger-Hileman, Tom, Fasiello, Matteo, Ferraro, Simone, Flauger, Raphael, Font-Ribera, Andreu, Foreman, Simon, Friedrich, Oliver, Garcia-Bellido, Juan, Gerbino, Martina, Gluscevic, Vera, Goon, Garrett, Gorski, Krzysztof M, Gudmundsson, Jon E, Gupta, Nikhel, Hanany, Shaul, Handley, Will, Hawken, Adam J, Hill, J Colin, Hirata, Christopher M, Hložek, Renée, Holder, Gilbert, Huterer, Dragan, Kamionkowski, Marc, Karkare, Kirit S, Keeley, Ryan E, Kinney, William, Kisner, Theodore, Kneib, Jean-Paul, Knox, Lloyd, Koushiappas, Savvas M, Kovetz, Ely D, Koyama, Kazuya, L'Huillier, Benjamin, Lahav, Ofer, Lattanzi, Massimiliano, Lee, Hayden, Liguori, Michele, Loverde, Marilena, Madhavacheril, Mathew, Maldacena, Juan, Marsh, MC David, Masui, Kiyoshi, Matarrese, Sabino, McAllister, Liam, McMahon, Jeff, McQuinn, Matthew, Meyers, Joel, Mirbabayi, Mehrdad, and Dizgah, Azadeh Moradinezhad

Subjects
astro-ph.CO, hep-th
Abstract

Our current understanding of the Universe is established through the pristinemeasurements of structure in the cosmic microwave background (CMB) and thedistribution and shapes of galaxies tracing the large scale structure (LSS) ofthe Universe. One key ingredient that underlies cosmological observables isthat the field that sources the observed structure is assumed to be initiallyGaussian with high precision. Nevertheless, a minimal deviation fromGaussianityis perhaps the most robust theoretical prediction of models thatexplain the observed Universe; itis necessarily present even in the simplestscenarios. In addition, most inflationary models produce far higher levels ofnon-Gaussianity. Since non-Gaussianity directly probes the dynamics in theearly Universe, a detection would present a monumental discovery in cosmology,providing clues about physics at energy scales as high as the GUT scale.

Published
2019

7. Dark Matter Science in the Era of LSST

Author

Bechtol, Keith, Drlica-Wagner, Alex, Abazajian, Kevork N, Abidi, Muntazir, Adhikari, Susmita, Ali-Haïmoud, Yacine, Annis, James, Ansarinejad, Behzad, Armstrong, Robert, Asorey, Jacobo, Baccigalupi, Carlo, Banerjee, Arka, Banik, Nilanjan, Bennett, Charles, Beutler, Florian, Bird, Simeon, Birrer, Simon, Biswas, Rahul, Biviano, Andrea, Blazek, Jonathan, Boddy, Kimberly K, Bonaca, Ana, Borrill, Julian, Bose, Sownak, Bovy, Jo, Frye, Brenda, Brooks, Alyson M, Buckley, Matthew R, Buckley-Geer, Elizabeth, Bulbul, Esra, Burchat, Patricia R, Burgess, Cliff, Calore, Francesca, Caputo, Regina, Castorina, Emanuele, Chang, Chihway, Chapline, George, Charles, Eric, Chen, Xingang, Clowe, Douglas, Cohen-Tanugi, Johann, Comparat, Johan, Croft, Rupert AC, Cuoco, Alessandro, Cyr-Racine, Francis-Yan, D'Amico, Guido, Davis, Tamara M, Dawson, William A, Macorra, Axel de la, Valentino, Eleonora Di, Rivero, Ana Díaz, Digel, Seth, Dodelson, Scott, Doré, Olivier, Dvorkin, Cora, Eckner, Christopher, Ellison, John, Erkal, Denis, Farahi, Arya, Fassnacht, Christopher D, Ferreira, Pedro G, Flaugher, Brenna, Foreman, Simon, Friedrich, Oliver, Frieman, Joshua, García-Bellido, Juan, Gawiser, Eric, Gerbino, Martina, Giannotti, Maurizio, Gill, Mandeep SS, Gluscevic, Vera, Golovich, Nathan, Gontcho, Satya Gontcho A, González-Morales, Alma X, Grin, Daniel, Gruen, Daniel, Hearin, Andrew P, Hendel, David, Hezaveh, Yashar D, Hirata, Christopher M, Hložek, Renee, Horiuchi, Shunsaku, Jain, Bhuvnesh, Jee, M James, Jeltema, Tesla E, Kamionkowski, Marc, Kaplinghat, Manoj, Keeley, Ryan E, Keeton, Charles R, Khatri, Rishi, Koposov, Sergey E, Koushiappas, Savvas M, Kovetz, Ely D, Lahav, Ofer, Lam, Casey, Lee, Chien-Hsiu, Li, Ting S, Liguori, Michele, Lin, Tongyan, and Lisanti, Mariangela

Subjects
astro-ph.CO, astro-ph.HE, hep-ex
Abstract

Astrophysical observations currently provide the only robust, empiricalmeasurements of dark matter. In the coming decade, astrophysical observationswill guide other experimental efforts, while simultaneously probing uniqueregions of dark matter parameter space. This white paper summarizesastrophysical observations that can constrain the fundamental physics of darkmatter in the era of LSST. We describe how astrophysical observations willinform our understanding of the fundamental properties of dark matter, such asparticle mass, self-interaction strength, non-gravitational interactions withthe Standard Model, and compact object abundances. Additionally, we highlighttheoretical work and experimental/observational facilities that will complementLSST to strengthen our understanding of the fundamental characteristics of darkmatter.

Published
2019

8. Dark Matter Science in the Era of LSST

Author

Bechtol, Keith, Drlica-Wagner, Alex, Abazajian, Kevork N, Abidi, Muntazir, Adhikari, Susmita, Ali-Haïmoud, Yacine, Annis, James, Ansarinejad, Behzad, Armstrong, Robert, Asorey, Jacobo, Baccigalupi, Carlo, Banerjee, Arka, Banik, Nilanjan, Bennett, Charles, Beutler, Florian, Bird, Simeon, Birrer, Simon, Biswas, Rahul, Biviano, Andrea, Blazek, Jonathan, Boddy, Kimberly K, Bonaca, Ana, Borrill, Julian, Bose, Sownak, Bovy, Jo, Frye, Brenda, Brooks, Alyson M, Buckley, Matthew R, Buckley-Geer, Elizabeth, Bulbul, Esra, Burchat, Patricia R, Burgess, Cliff, Calore, Francesca, Caputo, Regina, Castorina, Emanuele, Chang, Chihway, Chapline, George, Charles, Eric, Chen, Xingang, Clowe, Douglas, Cohen-Tanugi, Johann, Comparat, Johan, Croft, Rupert AC, Cuoco, Alessandro, Cyr-Racine, Francis-Yan, D'Amico, Guido, Davis, Tamara M, Dawson, William A, Macorra, Axel de la, Valentino, Eleonora Di, Rivero, Ana Díaz, Digel, Seth, Dodelson, Scott, Doré, Olivier, Dvorkin, Cora, Eckner, Christopher, Ellison, John, Erkal, Denis, Farahi, Arya, Fassnacht, Christopher D, Ferreira, Pedro G, Flaugher, Brenna, Foreman, Simon, Friedrich, Oliver, Frieman, Joshua, García-Bellido, Juan, Gawiser, Eric, Gerbino, Martina, Giannotti, Maurizio, Gill, Mandeep SS, Gluscevic, Vera, Golovich, Nathan, Gontcho, Satya Gontcho A, González-Morales, Alma X, Grin, Daniel, Gruen, Daniel, Hearin, Andrew P, Hendel, David, Hezaveh, Yashar D, Hirata, Christopher M, Hložek, Renee, Horiuchi, Shunsaku, Jain, Bhuvnesh, Jee, M James, Jeltema, Tesla E, Kamionkowski, Marc, Kaplinghat, Manoj, Keeley, Ryan E, Keeton, Charles R, Khatri, Rishi, Koposov, Sergey E, Koushiappas, Savvas M, Kovetz, Ely D, Lahav, Ofer, Lam, Casey, Lee, Chien-Hsiu, Li, Ting S, Liguori, Michele, Lin, Tongyan, and Lisanti, Mariangela

Subjects
astro-ph.CO, astro-ph.HE, hep-ex
Abstract

Astrophysical observations currently provide the only robust, empiricalmeasurements of dark matter. In the coming decade, astrophysical observationswill guide other experimental efforts, while simultaneously probing uniqueregions of dark matter parameter space. This white paper summarizesastrophysical observations that can constrain the fundamental physics of darkmatter in the era of LSST. We describe how astrophysical observations willinform our understanding of the fundamental properties of dark matter, such asparticle mass, self-interaction strength, non-gravitational interactions withthe Standard Model, and compact object abundances. Additionally, we highlighttheoretical work and experimental/observational facilities that will complementLSST to strengthen our understanding of the fundamental characteristics of darkmatter.

Published
2019

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