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1. The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range.

Author

Sedda, Manuel Arca, Berry, Christopher P. L., Jani, Karan, Amaro-Seoane, Pau, Auclair, Pierre, Baird, Jonathon, Baker, Tessa, Berti, Emanuele, Breivik, Katelyn, Caprini, Chiara, Chen, Xian, Doneva, Daniela, Ezquiaga, Jose M., Ford, K. E. Saavik, Katz, Michael L., Kolkowitz, Shimon, McKernan, Barry, Mueller, Guido, Nardini, Germano, and Pikovski, Igor

Subjects
BINARY black holes, ASTRONOMY, GENERAL relativity (Physics), PARTICLE physics, BLACK holes, STELLAR mergers
Abstract

Since 2015 the gravitational-wave observations of LIGO and Virgo have transformed our understanding of compact-object binaries. In the years to come, ground-based gravitational-wave observatories such as LIGO, Virgo, and their successors will increase in sensitivity, discovering thousands of stellar-mass binaries. In the 2030s, the space-based LISA will provide gravitational-wave observations of massive black holes binaries. Between the ∼ 10 –103 Hz band of ground-based observatories and the ∼ 1 0 − 4 –10− 1 Hz band of LISA lies the uncharted decihertz gravitational-wave band. We propose a Decihertz Observatory to study this frequency range, and to complement observations made by other detectors. Decihertz observatories are well suited to observation of intermediate-mass (∼ 1 0 2 –104M⊙) black holes; they will be able to detect stellar-mass binaries days to years before they merge, providing early warning of nearby binary neutron star mergers and measurements of the eccentricity of binary black holes, and they will enable new tests of general relativity and the Standard Model of particle physics. Here we summarise how a Decihertz Observatory could provide unique insights into how black holes form and evolve across cosmic time, improve prospects for both multimessenger astronomy and multiband gravitational-wave astronomy, and enable new probes of gravity, particle physics and cosmology. [ABSTRACT FROM AUTHOR]

Published
2021
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2. The missing link in gravitational-wave astronomy: discoveries waiting in the decihertz range.

Author

Sedda, Manuel Arca, Berry, Christopher P L, Jani, Karan, Amaro-Seoane, Pau, Auclair, Pierre, Baird, Jonathon, Baker, Tessa, Berti, Emanuele, Breivik, Katelyn, Burrows, Adam, Caprini, Chiara, Chen, Xian, Doneva, Daniela, Ezquiaga, Jose M, Ford, K E Saavik, Katz, Michael L, Kolkowitz, Shimon, McKernan, Barry, Mueller, Guido, and Nardini, Germano

Subjects
BINARY black holes, ASTRONOMY, BLACK holes, LASER interferometers, PARTICLE physics, STELLAR mergers
Abstract

The gravitational-wave astronomical revolution began in 2015 with LIGO's observation of the coalescence of two stellar-mass black holes. Over the coming decades, ground-based detectors like laser interferometer gravitational-wave observatory (LIGO), Virgo and KAGRA will extend their reach, discovering thousands of stellar-mass binaries. In the 2030s, the space-based laser interferometer space antenna (LISA) will enable gravitational-wave observations of the massive black holes in galactic centres. Between ground-based observatories and LISA lies the unexplored dHz gravitational-wave frequency band. Here, we show the potential of a decihertz observatory (DO) which could cover this band, and complement discoveries made by other gravitational-wave observatories. The dHz range is uniquely suited to observation of intermediate-mass (∼102–104M⊙) black holes, which may form the missing link between stellar-mass and massive black holes, offering an opportunity to measure their properties. DOs will be able to detect stellar-mass binaries days to years before they merge and are observed by ground-based detectors, providing early warning of nearby binary neutron star mergers, and enabling measurements of the eccentricity of binary black holes, providing revealing insights into their formation. Observing dHz gravitational-waves also opens the possibility of testing fundamental physics in a new laboratory, permitting unique tests of general relativity (GR) and the standard model of particle physics. Overall, a DO would answer outstanding questions about how black holes form and evolve across cosmic time, open new avenues for multimessenger astronomy, and advance our understanding of gravitation, particle physics and cosmology. [ABSTRACT FROM AUTHOR]

Published
2020
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3. Cosmology and fundamental physics with the Euclid satellite

Author

Amendola, L., Appleby, S., Bacon, D., Baker, T., Baldi, M., Bartolo, N., Blanchard, A., Bonvin, C., Borgani, S., Branchini, E., Burrage, C., Camera, S., Carbone, C., Casarini, L., Cropper, M., de Rham, C., Di Porto, C., Ealet, A., Ferreira, P. G., Finelli, F., García-Bellido, J., Giannantonio, T., Guzzo, L., Heavens, A., Heisenberg, L., Heymans, C., Hoekstra, H., Hollenstein, L., Holmes, R., Horst, O., Jahnke, K., Kitching, T. D., Koivisto, T., Kunz, M., La Vacca, G., March, M., Majerotto, E., Markovic, K., Marsh, D., Marulli, F., Massey, R., Mellier, Y., Mota, D. F., Nunes, N. J., Percival, W., Pettorino, V., Porciani, C., Quercellini, C., Read, J., Rinaldi, M., Sapone, D., Scaramella, R., Skordis, C., Simpson, F., Taylor, A., Thomas, S., Trotta, R., Verde, L., Vernizzi, F., Vollmer, A., Wang, Y., Weller, J., Zlosnik, T., Skordis, C. [0000-0001-5873-4259], Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique (ex SAP) (DAP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Théorique - UMR CNRS 3681 (IPHT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Amendola, Luca, Appleby, Stephen, Avgoustidis, Anastasio, Bacon, David, Baker, Tessa, Baldi, Marco, Bartolo, Nicola, Blanchard, Alain, Bonvin, Camille, Borgani, Stefano, Branchini, Enzo, Burrage, Clare, Camera, Stefano, Carbone, Carmelita, Casarini, Luciano, Cropper, Mark, de Rham, Claudia, Dietrich, Jörg P., Di Porto, Cinzia, Durrer, Ruth, Ealet, Anne, Ferreira, Pedro G., Finelli, Fabio, García-Bellido, Juan, Giannantonio, Tommaso, Guzzo, Luigi, Heavens, Alan, Heisenberg, Lavinia, Heymans, Catherine, Hoekstra, Henk, Hollenstein, Luka, Holmes, Rory, Hwang, Zhiqi, Jahnke, Knud, Kitching, Thomas D., Koivisto, Tomi, Kunz, Martin, La Vacca, Giuseppe, Linder, Eric, March, Marisa, Marra, Valerio, Martins, Carlo, Majerotto, Elisabetta, Markovic, Dida, Marsh, David, Marulli, Federico, Massey, Richard, Mellier, Yannick, Montanari, Francesco, Mota, David F., Nunes, Nelson J., Percival, Will, Pettorino, Valeria, Porciani, Cristiano, Quercellini, Claudia, Read, Justin, Rinaldi, Massimiliano, Sapone, Domenico, Sawicki, Ignacy, Scaramella, Roberto, Skordis, Constantino, Simpson, Fergu, Taylor, Andy, Thomas, Shaun, Trotta, Roberto, Verde, Licia, Vernizzi, Filippo, Vollmer, Adrian, Wang, Yun, Weller, Jochen, Zlosnik, Tom, Institut de recherche en astrophysique et planétologie ( IRAP ), Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Physique des Particules de Marseille ( CPPM ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Aix Marseille Université ( AMU ), Université Paris-Sud - Paris 11 ( UP11 ), Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire AIM, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay, Institut de Physique Théorique - UMR CNRS 3681 ( IPHT ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Luca, Amendola, Stephen, Appleby, David, Bacon, Tessa, Baker, Marco, Baldi, Nicola, Bartolo, Alain, Blanchard, Camille, Bonvin, Enzo, Branchini, Clare, Burrage, Stefano, Camera, Carmelita, Carbone, Luciano, Casarini, Mark, Cropper, Claudia de, Rham, Cinzia Di, Porto, Anne, Ealet, Pedro G., Ferreira, Fabio, Finelli, Juan García, Bellido, Tommaso, Giannantonio, Luigi, Guzzo, Alan, Heaven, Lavinia, Heisenberg, Catherine, Heyman, Henk, Hoekstra, Lukas, Hollenstein, Rory, Holme, Ole, Horst, Knud, Jahnke, Thomas D., Kitching, Tomi, Koivisto, Martin, Kunz, Giuseppe La, Vacca, Marisa, March, Elisabetta, Majerotto, Katarina, Markovic, David, Marsh, Federico, Marulli, Richard, Massey, Yannick, Mellier, David F., Mota, Nelson J., Nune, Will, Percival, Valeria, Pettorino, Cristiano, Porciani, Claudia, Quercellini, Justin, Read, Massimiliano, Rinaldi, Domenico, Sapone, Roberto, Scaramella, Constantinos, Skordi, Fergus, Simpson, Andy, Taylor, Shaun, Thoma, Roberto, Trotta, Licia, Verde, Filippo, Vernizzi, Adrian, Vollmer, Yun, Wang, Jochen, Weller, Tom, Zlosnik, Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Luca Amendola, Stephen Appleby, David Bacon, Tessa Baker, Marco Baldi, Nicola Bartolo, Alain Blanchard, Camille Bonvin, Stefano Borgani, Enzo Branchini, Clare Burrage, Stefano Camera, Carmelita Carbone, Luciano Casarini, Mark Cropper, Claudia de Rham, Cinzia Di Porto, Anne Ealet, Pedro G. Ferreira, Fabio Finelli, Juan García-Bellido, Tommaso Giannantonio, Luigi Guzzo, Alan Heaven, Lavinia Heisenberg, Catherine Heyman, Henk Hoekstra, Lukas Hollenstein, Rory Holme, Ole Horst, Knud Jahnke, Thomas D. Kitching, Tomi Koivisto, Martin Kunz, Giuseppe La Vacca, Marisa March, Elisabetta Majerotto, Katarina Markovic, David Marsh, Federico Marulli, Richard Massey, Yannick Mellier, David F. Mota, Nelson J. Nune, Will Percival, Valeria Pettorino, Cristiano Porciani, Claudia Quercellini, Justin Read, Massimiliano Rinaldi, Domenico Sapone, Roberto Scaramella, Constantinos Skordi, Fergus Simpson, Andy Taylor, Shaun Thoma, Roberto Trotta, Licia Verde, Filippo Vernizzi, Adrian Vollmer, Yun Wang, Jochen Weller, Tom Zlosnik, Dietrich, Jörg P, Ferreira, Pedro G, Kitching, Thomas D, Mota, David F, Nunes, Nelson J, Amendola, L, Appleby, S, Bacon, D, Baker, T, Baldi, M, Bartolo, N, Blanchard, A, Bonvin, C, Borgani, S, Branchini, E, Burrage, C, Camera, S, Carbone, C, Casarini, L, Cropper, M, de Rham, C, Di Porto, C, Ealet, A, Ferreira, P, Finelli, F, García Bellido, J, Giannantonio, T, Guzzo, L, Heavens, A, Heisenberg, L, Heymans, C, Hoekstra, H, Hollenstein, L, Holmes, R, Horst, O, Jahnke, K, Kitching, T, Koivisto, T, Kunz, M, LA VACCA, G, March, M, Majerotto, E, Markovic, K, Marsh, D, Marulli, F, Massey, R, Mellier, Y, Mota, D, Nunes, N, Percival, W, Pettorino, V, Porciani, C, Quercellini, C, Read, J, Rinaldi, M, Sapone, D, Scaramella, R, Skordis, C, Simpson, F, Taylor, A, Thomas, S, Trotta, R, Verde, L, Vernizzi, F, Vollmer, A, Wang, Y, Weller, J, Zlosnik, T, Science and Technology Facilities Council (STFC), Imperial College Trust, Science and Technology Facilities Council, Avgoustidis, A, Dietrich, J, Durrer, R, Garcia-Bellido, J, Hwang, Z, La Vacca, G, Linder, E, Marra, V, Martins, C, Markovic, D, Montanari, F, Sawicki, I, Ferreira Pedro, G., Horst, Ole, Kitching Thomas, D., Markovic, Katarina, Mota David, F., Nunes, Nelson, and Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
Cosmology, Dark energy, Galaxy evolution, Physics and Astronomy (miscellaneous), cosmological model, Cold dark matter, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], gravitation: model, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Review Article, Astrophysics, 01 natural sciences, 7. Clean energy, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology (hep-ph), GALAXY REDSHIFT SURVEY, 3-POINT CORRELATION-FUNCTION, Cosmology and Extragalactic Astrophysic [Astrophysics], 010303 astronomy & astrophysics, Physics, COSMIC cancer database, galaxy: redshift, PHYSICS, PARTICLES & FIELDS, Mathematics::History and Overview, formation, Astrophysics::Instrumentation and Methods for Astrophysics, hep-ph, EQUATION-OF-STATE, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Physical Sciences, astro-ph.CO, galaxy: cluster, NONLINEAR STRUCTURE FORMATION, history, expansion: acceleration, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmic Vision, Cosmology and Nongalactic Astrophysics (astro-ph.CO), gr-qc, Dark matter, satellite, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics::Cosmology and Extragalactic Astrophysics, lcsh:Atomic physics. Constitution and properties of matter, PRIMORDIAL NON-GAUSSIANITY, dark matter, Metric expansion of space, GENERALIZED CHAPLYGIN-GAS, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], FIS/05 - ASTRONOMIA E ASTROFISICA, Settore FIS/05 - Astronomia e Astrofisica, LARGE-SCALE STRUCTURE, 0103 physical sciences, Galaxy formation and evolution, High Energy Physics: Phenomenology, FUTURE REDSHIFT SURVEYS, structure, Euclid Theory Working Group, Science & Technology, DIGITAL-SKY-SURVEY, 010308 nuclear & particles physics, Astrophysics: Cosmology and Extragalactic Astrophysics, Astronomy, N-BODY SIMULATIONS, MICROWAVE-ANISOTROPY-PROBE, Phenomenology [High Energy Physics], Galaxy, boundary condition, lcsh:QC170-197, COLD DARK-MATTER, 0201 Astronomical And Space Sciences, cosmology, dark energy, galaxy evolution, LENSING MASS RECONSTRUCTION, 13. Climate action, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

Euclid is a European Space Agency medium class mission selected for launch in 2019 within the Cosmic Vision 2015-2025 programme. The main goal of Euclid is to understand the origin of the accelerated expansion of the Universe. Euclid will explore the expansion history of the Universe and the evolution of cosmic structures by measuring shapes and redshifts of galaxies as well as the distribution of clusters of galaxies over a large fraction of the sky. Although the main driver for Euclid is the nature of dark energy, Euclid science covers a vast range of topics, from cosmology to galaxy evolution to planetary research. In this review we focus on cosmology and fundamental physics, with a strong emphasis on science beyond the current standard models. We discuss five broad topics: dark energy and modified gravity, dark matter, initial conditions, basic assumptions and questions of methodology in the data analysis. This review has been planned and carried out within Euclid's Theory Working Group and is meant to provide a guide to the scientific themes that will underlie the activity of the group during the preparation of the Euclid mission., Comment: 236 pages, minor edits to match the journal version 2013

Published
2013

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