Nature Astronomy最新文献_第10页

Evidence of the fast acceleration of AGN-driven winds at kiloparsec scales agn驱动的风在千秒级快速加速的证据

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-31 DOI: 10.1038/s41550-025-02518-6

Cosimo Marconcini, Alessandro Marconi, Giovanni Cresci, Filippo Mannucci, Lorenzo Ulivi, Giacomo Venturi, Martina Scialpi, Giulia Tozzi, Francesco Belfiore, Elena Bertola, Stefano Carniani, Elisa Cataldi, Avinanda Chakraborty, Quirino D’Amato, Enrico Di Teodoro, Anna Feltre, Michele Ginolfi, Bianca Moreschini, Nicole Orientale, Bartolomeo Trefoloni, Andrew King

{"title":"Evidence of the fast acceleration of AGN-driven winds at kiloparsec scales","authors":"Cosimo Marconcini, Alessandro Marconi, Giovanni Cresci, Filippo Mannucci, Lorenzo Ulivi, Giacomo Venturi, Martina Scialpi, Giulia Tozzi, Francesco Belfiore, Elena Bertola, Stefano Carniani, Elisa Cataldi, Avinanda Chakraborty, Quirino D’Amato, Enrico Di Teodoro, Anna Feltre, Michele Ginolfi, Bianca Moreschini, Nicole Orientale, Bartolomeo Trefoloni, Andrew King","doi":"10.1038/s41550-025-02518-6","DOIUrl":"https://doi.org/10.1038/s41550-025-02518-6","url":null,"abstract":"Supermassive black holes at the centres of galaxies gain mass through accretion disks. Different models predict that quasi-spherical winds, expelled by black holes during accretion, have a key role in galaxy evolution through regulating star formation and the distribution of metals over kiloparsec scales and sweeping ambient gas to the outskirts of galaxies. Nonetheless, the mechanism that drives these outflows and the amount of energy exchanged between the wind and the galaxy’s interstellar medium remain unclear. Here we analyse the kinematic properties of these winds in a sample of nearby active galaxies using the MOKA3D model, which reproduces the clumpy nature of the interstellar medium. We provide evidence that outflows exhibit a regular radial velocity trend—initially constant or slightly decreasing, followed by rapid acceleration starting at approximately 1 kpc from the nucleus—despite the seemingly complex kinematics. The observed behaviour is consistent with current theoretical understanding of active galactic nucleus outflows, where a momentum-driven phase transitions to an energy-conserving phase beyond 1 kpc. The constant velocity of the momentum-driven wind is then rapidly accelerated following inefficient Compton cooling of post-shock material. The measured radial terminal velocities of the outflows are larger than the escape velocities from the host galaxies, confirming the role of outflows in shaping galaxy evolution as a manifestation of active galactic nucleus feedback.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"16 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

An interference-based method for the detection of strongly lensed gravitational waves 基于干涉的强透镜引力波探测方法

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-31 DOI: 10.1038/s41550-025-02519-5

Xikai Shan, Bin Hu, Xuechun Chen, Rong-Gen Cai

{"title":"An interference-based method for the detection of strongly lensed gravitational waves","authors":"Xikai Shan, Bin Hu, Xuechun Chen, Rong-Gen Cai","doi":"10.1038/s41550-025-02519-5","DOIUrl":"https://doi.org/10.1038/s41550-025-02519-5","url":null,"abstract":"The strongly lensed gravitational wave (SLGW) is a promising transient phenomenon. However, the long-wave nature of gravitational waves poses a considerable challenge in the identification of its host galaxy. Here, to tackle this challenge, we propose a method triggered by the wave optics effect of microlensing. The microlensing interference introduces frequency-dependent fluctuations in the waveform. Our method consists of three steps. First, we reconstruct the waveforms by using template-independent and template-dependent methods. The mismatch of two reconstructions serves as an indicator of SLGWs. This step can identify approximately 10% SLGWs. Second, we pair the multiple images of the SLGWs by using sky localization overlapping. Because we have preidentified at least one image through microlensing, the false-alarm probability for pairing SLGWs is significantly reduced. Third, we search the host galaxy by requiring the consistency of time delays between galaxy–galaxy lensing and SLGW. By combing the stage-IV galaxy survey and the third-generation gravitational wave detectors, we expect to find, on average, one quadruple-image system per 3 years. This method can substantially facilitate the pursuit of time-delay cosmography, discovery of compact objects and multimessenger astronomy.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"2 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Discovery of $${{bf{H}}}_{mathbf{3}}^{mathbf{+}}$$ and infrared aurorae at Neptune with JWST 用JWST在海王星上发现$${{bf{H}}}_{mathbf{3}}^{mathbf{+}}$$和红外极光

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-26 DOI: 10.1038/s41550-025-02507-9

Henrik Melin, Luke Moore, Leigh N. Fletcher, Heidi B. Hammel, James O’Donoghue, Tom S. Stallard, Stephanie N. Milam, Michael Roman, Oliver R. T. King, Naomi Rowe-Gurney, Emma E. Thomas, Ruoyan Wang, Paola I. Tiranti, Jake Harkett, Katie L. Knowles

引用次数: 0

Subaru’s newest spectrometer with thousands of eyes 斯巴鲁最新的千只眼睛光谱仪

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-25 DOI: 10.1038/s41550-025-02515-9

Naoyuki Tamura

引用次数: 0

Cospatial ice mapping of H2O with CO2 and CO across a molecular cloud with JWST/NIRCam JWST/NIRCam在分子云上对H2O与CO2和CO的空间冰映射

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-24 DOI: 10.1038/s41550-025-02511-z

Z. L. Smith, H. J. Dickinson, H. J. Fraser, M. K. McClure, J. A. Noble, A. C. A. Boogert, F. Sun, E. Egami, E. Dartois, J. Erkal, T. Shimonishi, T. L. Beck, J. B. Bergner, P. Caselli, S. B. Charnley, L. Chu, M. N. Drozdovskaya, R. Garrod, D. Harsono, S. Ioppolo, I. Jimenez-Serra, J. K. Jørgensen, G. J. Melnick, K. I. Öberg, M. E. Palumbo, Y. J. Pendleton, G. Perotti, K. M. Pontoppidan, D. Qasim, W. R. M. Rocha, J. A. Sturm, A. Taillard, R. G. Urso, E. F. van Dishoeck

{"title":"Cospatial ice mapping of H2O with CO2 and CO across a molecular cloud with JWST/NIRCam","authors":"Z. L. Smith, H. J. Dickinson, H. J. Fraser, M. K. McClure, J. A. Noble, A. C. A. Boogert, F. Sun, E. Egami, E. Dartois, J. Erkal, T. Shimonishi, T. L. Beck, J. B. Bergner, P. Caselli, S. B. Charnley, L. Chu, M. N. Drozdovskaya, R. Garrod, D. Harsono, S. Ioppolo, I. Jimenez-Serra, J. K. Jørgensen, G. J. Melnick, K. I. Öberg, M. E. Palumbo, Y. J. Pendleton, G. Perotti, K. M. Pontoppidan, D. Qasim, W. R. M. Rocha, J. A. Sturm, A. Taillard, R. G. Urso, E. F. van Dishoeck","doi":"10.1038/s41550-025-02511-z","DOIUrl":"https://doi.org/10.1038/s41550-025-02511-z","url":null,"abstract":"In the coldest regions of molecular clouds, carbon and oxygen are incorporated into icy dust grains. Despite its outsized role in star and planet formation, sequential formation of ice is poorly constrained. Infrared spectroscopy probes ice chemistry, but previous telescopes observed insufficient lines of sight to map a single cloud. Here we present cospatial maps of H2O, CO2 and CO ice over the central region of the Chamaeleon I molecular cloud, using 44 lines of sight observed with the James Webb Space Telescope. Correlations at column densities ten times larger than previous work suggest additional CO2 ice formation in CO ice for the densest lines of sight. This large statistical sampling within a single cloud represents a step change in ice mapping, eliminating averaging over clouds with different intrinsic chemical environments. Mapping opens the door to probing gas–grain exchanges, snow lines and chemical evolution in the densest regions and drawing conclusions on the impact of ice chemistry on wider astrophysics.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"32 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

No magmatic driving force for Europan sea-floor volcanism 欧洲海底火山活动没有岩浆动力

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-24 DOI: 10.1038/s41550-025-02508-8

A. P. Green, C. M. Elder, M. T. Bland, P. J. Tackley, P. K. Byrne

{"title":"No magmatic driving force for Europan sea-floor volcanism","authors":"A. P. Green, C. M. Elder, M. T. Bland, P. J. Tackley, P. K. Byrne","doi":"10.1038/s41550-025-02508-8","DOIUrl":"https://doi.org/10.1038/s41550-025-02508-8","url":null,"abstract":"The internal ocean of Jupiter’s moon Europa is thought to be a prime candidate for hosting extraterrestrial life. Europa’s silicate interior may contribute to habitability through the generation of reactants from hydrothermal activity, serpentinization or other geological processes occurring on or just below Europa’s sea floor. However, silicates are thought to melt at depths >100 km in Europa’s mantle, and it is unknown whether this magma can penetrate and travel through the moon’s probably thick, brittle lithosphere to erupt at the sea floor. We combine previous approaches for modelling melt generation in the Europan interior and lithospheric dyke transport to show that Europan sea-floor volcanism is strongly inhibited by its lithosphere. The low stress state of the Europan interior hinders the ability of dykes to penetrate through the lithosphere. Should dykes form, they penetrate <5% of the 200–250-km-thick lithosphere. Low mantle melt fractions (3–5%) drive a sluggish pore-space magma flow, leading to dyke influxes 10,000 times lower than that necessary for sea-floor eruption. These results strongly indicate that models of Europan habitability reliant on present-day volcanism at its sea floor are implausible.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"7 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

A brief encounter with an energetic cosmic neutrino 与高能宇宙中微子的短暂相遇

IF 12.9 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-20 DOI: 10.1038/s41550-025-02521-x

Paul Woods

引用次数: 0

Using large language models wisely 明智地使用大型语言模型

IF 12.9 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-20 DOI: 10.1038/s41550-025-02524-8

引用次数: 0

Emulating baryons from dark matter simulations 从暗物质模拟中模拟重子

IF 12.9 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-18 DOI: 10.1038/s41550-025-02520-y

Lindsay Oldham

引用次数: 0

A giant disk galaxy two billion years after the Big Bang 宇宙大爆炸 20 亿年后的巨型盘状星系

IF 14.1 1区物理与天体物理

Nature Astronomy Pub Date : 2025-03-17 DOI: 10.1038/s41550-025-02500-2

Weichen Wang, Sebastiano Cantalupo, Antonio Pensabene, Marta Galbiati, Andrea Travascio, Charles C. Steidel, Michael V. Maseda, Gabriele Pezzulli, Stephanie de Beer, Matteo Fossati, Michele Fumagalli, Sofia G. Gallego, Titouan Lazeyras, Ruari Mackenzie, Jorryt Matthee, Themiya Nanayakkara, Giada Quadri

{"title":"A giant disk galaxy two billion years after the Big Bang","authors":"Weichen Wang, Sebastiano Cantalupo, Antonio Pensabene, Marta Galbiati, Andrea Travascio, Charles C. Steidel, Michael V. Maseda, Gabriele Pezzulli, Stephanie de Beer, Matteo Fossati, Michele Fumagalli, Sofia G. Gallego, Titouan Lazeyras, Ruari Mackenzie, Jorryt Matthee, Themiya Nanayakkara, Giada Quadri","doi":"10.1038/s41550-025-02500-2","DOIUrl":"https://doi.org/10.1038/s41550-025-02500-2","url":null,"abstract":"Observational studies have shown that galaxy disks were already in place in the first few billion years of the Universe. The early disks detected so far, with typical half-light radii of 3 kpc at stellar masses around 1011 M⊙ for redshift z ≈ 3, are significantly smaller than today’s disks with similar masses, which is in agreement with expectations from current galaxy models. Here we report observations of a giant disk at z = 3.25, when the Universe was only two billion years old, with a half-light radius of 9.6 kpc and stellar mass of ({{mathtt{3.7}}}_{-{mathtt{2.2}}}^{+{mathtt{2.6}}}times {{mathtt{10}}}^{{mathtt{11}}},{M}_{odot }). This galaxy is larger than any other kinematically confirmed disks at similar epochs and is surprisingly similar to today’s largest disks with regard to size and mass. James Webb Space Telescope imaging and spectroscopy reveal its spiral morphology and a rotational velocity consistent with a local Tully–Fisher relationship. Multiwavelength observations show that it lies in an exceptionally dense environment, where the galaxy number density is more than ten times higher than the cosmic average and mergers are frequent. The discovery of such a giant disk suggests the presence of favourable physical conditions for large-disk formation in dense environments in the early Universe, which may include efficient accretion of gas carrying coherent angular momentum and non-destructive mergers between exceptionally gas-rich progenitor galaxies.","PeriodicalId":18778,"journal":{"name":"Nature Astronomy","volume":"27 1","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143635700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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