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Vortices in dipolar Bose–Einstein condensates 偶极玻色-爱因斯坦凝聚体中的涡旋
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-23 DOI: 10.5802/crphys.160
Thomas Bland, G. Lamporesi, M. Mark, F. Ferlaino
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引用次数: 2
Impact of stellar variability on exoplanet detectability and characterisation 恒星变异性对系外行星可探测性和特征的影响
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-21 DOI: 10.5802/crphys.140
N. Meunier
{"title":"Impact of stellar variability on exoplanet detectability and characterisation","authors":"N. Meunier","doi":"10.5802/crphys.140","DOIUrl":"https://doi.org/10.5802/crphys.140","url":null,"abstract":"","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42784880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Observations of circumstellar disks in scattered light with SPHERE at the VLT 在VLT上用SPHERE在散射光中对星周盘的观测
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-21 DOI: 10.5802/crphys.134
A. Boccaletti
{"title":"Observations of circumstellar disks in scattered light with SPHERE at the VLT","authors":"A. Boccaletti","doi":"10.5802/crphys.134","DOIUrl":"https://doi.org/10.5802/crphys.134","url":null,"abstract":"","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46079684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Propriétés remarquables de la réfraction astronomique dans une atmosphère à symétrie sphérique 球面对称大气中天文折射的显著特性
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-08 DOI: 10.5802/crphys.113
L. Dettwiller
{"title":"Propriétés remarquables de la réfraction astronomique dans une atmosphère à symétrie sphérique","authors":"L. Dettwiller","doi":"10.5802/crphys.113","DOIUrl":"https://doi.org/10.5802/crphys.113","url":null,"abstract":"","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46399584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Images du Soleil et de la Lune, depuis le sol ou la Station spatiale internationale 太阳和月球的图像，从地面或国际空间站
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-08 DOI: 10.5802/crphys.122
F. Mignard
{"title":"Images du Soleil et de la Lune, depuis le sol ou la Station spatiale internationale","authors":"F. Mignard","doi":"10.5802/crphys.122","DOIUrl":"https://doi.org/10.5802/crphys.122","url":null,"abstract":"observation","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42370437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Optique adaptative  : correction des effets de la turbulence atmosphérique sur les images astronomiques 自适应光学：校正大气湍流对天文图像的影响
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-03 DOI: 10.5802/crphys.111
G. Rousset, T. Fusco
{"title":"Optique adaptative  : correction des effets de la turbulence atmosphérique sur les images astronomiques","authors":"G. Rousset, T. Fusco","doi":"10.5802/crphys.111","DOIUrl":"https://doi.org/10.5802/crphys.111","url":null,"abstract":"","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43160482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
L’invariant de Bouguer et ses conséquences : commentaire historique 布格不变量及其后果：历史评论
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-03 DOI: 10.5802/crphys.115
L. Dettwiller
{"title":"L’invariant de Bouguer et ses conséquences : commentaire historique","authors":"L. Dettwiller","doi":"10.5802/crphys.115","DOIUrl":"https://doi.org/10.5802/crphys.115","url":null,"abstract":"","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47207747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Exoplanet science with SPIRou: near-infrared precision velocimetry and spectropolarimetry 系外行星科学与SPIRou:近红外精密速度测量和光谱偏振测量
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-03-01 DOI: 10.5802/crphys.141
C. Moutou, J. Donati, F. Debras
{"title":"Exoplanet science with SPIRou: near-infrared precision velocimetry and spectropolarimetry","authors":"C. Moutou, J. Donati, F. Debras","doi":"10.5802/crphys.141","DOIUrl":"https://doi.org/10.5802/crphys.141","url":null,"abstract":"","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42427904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Ultra narrow linewidth frequency reference via measurement and feedback 通过测量和反馈的超窄线宽频率参考
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-02-22 DOI: 10.5802/crphys.146
D. Barberena, R. J. Lewis-Swan, A. Rey, J. K. Thompson
{"title":"Ultra narrow linewidth frequency reference via measurement and feedback","authors":"D. Barberena, R. J. Lewis-Swan, A. Rey, J. K. Thompson","doi":"10.5802/crphys.146","DOIUrl":"https://doi.org/10.5802/crphys.146","url":null,"abstract":"The generation of very narrow linewidth light sources is of great importance in modern science. One such source is the superradiant laser, which relies on collectively interacting ultra long lived dipoles driven by incoherent light. Here we discuss a different way of generating spectrally pure light by coherently driving such dipoles inside an optical QED cavity. The light exiting the cavity carries information about the detuning between the driving light and the atomic transition, but is also affected by the noise originating from all the decoherence processes that act on the combined atom-cavity system. We calculate these effects to obtain fundamental limits for frequency estimation and stabilization across a range of values of input light intensities and atom-light interaction strengths, estimate these limits in state-of-the-art cavity experiments with alkaline-earth atoms and identify favorable operating conditions. We find that the achievable linewidths are comparable to those of the superradiant laser.","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44289399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging exoplanets with coronagraphic instruments 用日冕仪成像系外行星
IF 1.4 4区 物理与天体物理
Comptes Rendus Physique Pub Date : 2023-02-21 DOI: 10.5802/crphys.133
R. Galicher, J. Mazoyer
{"title":"Imaging exoplanets with coronagraphic instruments","authors":"R. Galicher, J. Mazoyer","doi":"10.5802/crphys.133","DOIUrl":"https://doi.org/10.5802/crphys.133","url":null,"abstract":"Exoplanetary science is a very active field of astronomy nowadays, with questions still opened such as how planetary systems form and evolve (occurrence, process), why such a diversity of exoplanets is observed (mass, radius, orbital parameters, temperature, composition), and what are the interactions between planets, circumstellar disk and their host star. Several complementary methods are used for the detection of exoplanets. Among these, imaging aims at the direct detection of the light reflected, scattered or emitted by exoplanets and circumstellar disks. This allows their spectral and polarimetric characterization. Such imaging remains challenging because of the large luminosity ratio (1e4-1e10$) and the small angular separation (fraction of an arcsecond) between the star and its environment. Over the past two decades, numerous techniques, including coronagraphy, have been developed to make exoplanet imaging a reality. This review gives a broad overview of the subsystems that make up a coronagraphic instrument for imaging exoplanetary systems. It is especially intended for non-specialists or newcomers in the field. We explain the principle of coronagraphy and propose a formalism to understand their behavior. We discuss the impact of wavefront aberrations on the performance of coronagraphs and how they induce stellar speckles in the scientific image. Finally, we present instrumental and signal processing techniques used for on-sky minimization or a posteriori calibration of these speckles in order to improve the performance of coronagraphs.","PeriodicalId":50650,"journal":{"name":"Comptes Rendus Physique","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43466537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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