標(biāo)題: Titlebook: ; [打印本頁(yè)] 作者: estradiol 時(shí)間: 2025-3-21 18:53
書(shū)目名稱(chēng)Growing Black Holes: Accretion in a Cosmological Context影響因子(影響力)
書(shū)目名稱(chēng)Growing Black Holes: Accretion in a Cosmological Context影響因子(影響力)學(xué)科排名
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書(shū)目名稱(chēng)Growing Black Holes: Accretion in a Cosmological Context讀者反饋
書(shū)目名稱(chēng)Growing Black Holes: Accretion in a Cosmological Context讀者反饋學(xué)科排名
作者: Detonate 時(shí)間: 2025-3-21 21:29
The Environmental Impact of Supermassive Black Holes,inciple of ., by which supermassive black holes grow until they release sufficient energy to unbind the gas that feeds them from their host galaxy. This principle explains several observed facts, including the correlation between the mass of a central black hole and the depth of the gravitational po作者: Contracture 時(shí)間: 2025-3-22 00:37
The Growth of the Earliest Supermassive Black Holes and Their Contribution to Reionization,ing black holes (BHs) can help explain these observations. We show new evidence, based on the combined statistics of Lyman . and . absorption in quasar spectra, that the IGM contains a significant amount of neutral hydrogen, and is experiencing rapid ionization at redshift .~ 6. However, we argue th作者: Fecal-Impaction 時(shí)間: 2025-3-22 05:21 作者: 頭腦冷靜 時(shí)間: 2025-3-22 09:04 作者: floaters 時(shí)間: 2025-3-22 15:41
,Calibrating the Galaxy Halo – Black Hole Relation Based on the Clustering of Quasars,asars. The slow evolution of the clustering length with redshift inferred in the 2dF quasar redshift survey strongly favors a scenario where the central black-holes comprise a larger fraction of the host galaxy mass at higher redshifts. In a scenario where quasars are triggered by halo mergers, this作者: floaters 時(shí)間: 2025-3-22 19:08 作者: Barter 時(shí)間: 2025-3-23 00:52
A Physically Motivated Toy Model for the BH-Spheroid Coevolution,co-evolution of massive black holes (MBHs) at the center of stellar spheroids and their stellar and gaseous components. We consider cosmological infall of gas as well as the mass and energy return for the evolving stellar population. The AGN . heating and cooling are described by assuming photoioniz作者: 固定某物 時(shí)間: 2025-3-23 02:28 作者: 放氣 時(shí)間: 2025-3-23 08:52 作者: 簡(jiǎn)潔 時(shí)間: 2025-3-23 12:11 作者: FAZE 時(shí)間: 2025-3-23 17:30
The Spatial Clustering of X-ray Selected AGN in the Chandra Msec Fields,andra Deep Field South (CDFS). The AGN clustering amplitude, measured for sources with median luminosity .~ 10. erg?s. and at a median redshift of ~ 0.9, is found to be a factor of ~ 2 higher in the CDFS than in the CDFN, revealing large cosmic variance in these 0.1 deg. fields. The extra correlatio作者: Indebted 時(shí)間: 2025-3-23 18:39
What Powers High-Redshift SCUBA Galaxies?,e 2?Ms . Deep Field-North) and deep optical spectroscopic data. Even though a large fraction of high-redshift SCUBA galaxies host AGN activity (upward of 38%), we argue that in almost all cases the AGNs are not bolometrically important (i.e., contribute <20% of the energetics). Thus, most high-redsh作者: indigenous 時(shí)間: 2025-3-24 01:25
Early Spitzer Detections of Extreme X-ray/Optical Sources (EXOs),ray sources are completely undetected in our deep optical GOODS HST/ACS imaging, to limits that place them at the extreme end of the .x/. parameter space, with values about 100 to 1000 times higher than generally found for Active Galactic Nuclei (AGN). We use their Spitzer detections to investigate 作者: Glucose 時(shí)間: 2025-3-24 02:55
Why Are Only High-Redshift Obscured AGN Bright Submillimeter Sources?,]. We have used sensitive submillimetre (submm) observations?[8,9,12] (using SCUBA at the JCMT) to show that the submm luminosities of unabsorbed and absorbed broad line QSO in those intervals are radically different (>3.): only 1 out of 20 unabsorbed QSO has been detected, while 8 out of 19 absorbe作者: 四目在模仿 時(shí)間: 2025-3-24 06:56 作者: 顧客 時(shí)間: 2025-3-24 13:20
XMM-Newton Observations of Four High-z Quasars, most luminous and distant sources of electromagnetic radiation known. The X-ray emission gives insight into the accretion mechanisms onto super-massive black holes. Current questions are whether quasars exhibit spectral evolution or not and whether absorption in excess of the galactic . is a genera作者: 受傷 時(shí)間: 2025-3-24 14:49 作者: itinerary 時(shí)間: 2025-3-24 19:26
https://doi.org/10.1007/978-94-011-5129-0inciple of ., by which supermassive black holes grow until they release sufficient energy to unbind the gas that feeds them from their host galaxy. This principle explains several observed facts, including the correlation between the mass of a central black hole and the depth of the gravitational po作者: 愛(ài)了嗎 時(shí)間: 2025-3-24 23:24 作者: neurologist 時(shí)間: 2025-3-25 06:39
Physiology Question-Based Learning galaxy formation. I review recent progress in simulating their formation out of primordial, pure hydrogen-helium gas at redshifts ~ 10. The predicted host systems are early dwarf galaxies with total masses ~ 10. .. To be able to form seed black holes, with typical mass ~ 10., the dwarf galaxy must 作者: projectile 時(shí)間: 2025-3-25 10:04 作者: NICE 時(shí)間: 2025-3-25 12:32
https://doi.org/10.1007/978-94-017-2660-3asars. The slow evolution of the clustering length with redshift inferred in the 2dF quasar redshift survey strongly favors a scenario where the central black-holes comprise a larger fraction of the host galaxy mass at higher redshifts. In a scenario where quasars are triggered by halo mergers, this作者: 大約冬季 時(shí)間: 2025-3-25 19:11
The cell wall and reproduction,ffective in slowing down the star formation and in driving gas outflows in smaller and smaller dark matter halos. Thus the more massive protogalaxies virializing at early times are the sites of faster star formation. The correspondingly higher radiation drag causes a faster angular momentum loss by 作者: SMART 時(shí)間: 2025-3-25 20:47 作者: 邊緣帶來(lái)墨水 時(shí)間: 2025-3-26 02:24
https://doi.org/10.1007/978-3-642-68643-6st probes of the early growth of supermassive black holes in the universe, the relation between the formation of early galaxies and black holes, and put constraints on the role of quasars and AGNs to the cosmic reionization. About 1000 quasars have been discovered at .>4, including 50 at .>5 and eig作者: stroke 時(shí)間: 2025-3-26 08:08
Physiology and Genetics of Reproductionradio-quiet quasars, radio-loud quasars, moderate-luminosity AGNs in . surveys, and future prospects. No significant changes in AGN . emission properties have yet been found at high redshift, indicating that the small-scale . emission regions of AGNs are insensitive to the dramatic changes on larger作者: OPINE 時(shí)間: 2025-3-26 12:19
ATTIPALLI R. REDDY,AGEPATI S. RAGHAVENDRAicts that the supermassive black holes present in these quasars were formed at a very early epoch. If a correlation between black hole mass and dark matter halo mass is present at these early times, then these rare supermassive black holes will be located inside the most massive dark matter halos. T作者: tattle 時(shí)間: 2025-3-26 15:43
Intrauterine Pressure and the Human Foetus,andra Deep Field South (CDFS). The AGN clustering amplitude, measured for sources with median luminosity .~ 10. erg?s. and at a median redshift of ~ 0.9, is found to be a factor of ~ 2 higher in the CDFS than in the CDFN, revealing large cosmic variance in these 0.1 deg. fields. The extra correlatio作者: 不能妥協(xié) 時(shí)間: 2025-3-26 17:39
Evolutionary Aspects of Membrane Digestion,e 2?Ms . Deep Field-North) and deep optical spectroscopic data. Even though a large fraction of high-redshift SCUBA galaxies host AGN activity (upward of 38%), we argue that in almost all cases the AGNs are not bolometrically important (i.e., contribute <20% of the energetics). Thus, most high-redsh作者: 不要不誠(chéng)實(shí) 時(shí)間: 2025-3-26 23:29
Evolutionary Aspects of Membrane Digestion,ray sources are completely undetected in our deep optical GOODS HST/ACS imaging, to limits that place them at the extreme end of the .x/. parameter space, with values about 100 to 1000 times higher than generally found for Active Galactic Nuclei (AGN). We use their Spitzer detections to investigate 作者: Digitalis 時(shí)間: 2025-3-27 04:56
https://doi.org/10.1007/978-981-13-2580-9]. We have used sensitive submillimetre (submm) observations?[8,9,12] (using SCUBA at the JCMT) to show that the submm luminosities of unabsorbed and absorbed broad line QSO in those intervals are radically different (>3.): only 1 out of 20 unabsorbed QSO has been detected, while 8 out of 19 absorbe作者: Foment 時(shí)間: 2025-3-27 05:16
https://doi.org/10.1007/978-1-4614-7528-6the QSO and find that it is hosted by an elliptical of M. = –27.6. This result, though restricted to a single object, extends up to z=2.5 the finding that cosmic evolution of radio-loud hosts follows the trend expected for luminous and massive spheroids undergoing passive evolution.作者: 表臉 時(shí)間: 2025-3-27 11:33 作者: cauda-equina 時(shí)間: 2025-3-27 16:42 作者: 尋找 時(shí)間: 2025-3-27 21:22
Physiology Question-Based Learningnt for the high redshift (.~ 15) ionization implied by the recent cosmic microwave anisotropy data from WMAP. Using a model for the growth of BHs by accretion and mergers in a hierarchical cosmology, we suggest that the early growth of quasars must include a super-Eddington growth phase, and that, a作者: BARK 時(shí)間: 2025-3-27 22:13 作者: BILL 時(shí)間: 2025-3-28 03:13
The Environmental Impact of Supermassive Black Holes,ntified observationally through the detection of gravitational waves from black hole binaries by . or .. Aside from shaping their host galaxies, quasar outflows filled the intergalactic medium with magnetic fields and heavy elements. Beyond the reach of these outflows, the brightest quasars at .>6 h作者: 使糾纏 時(shí)間: 2025-3-28 08:09 作者: 外觀(guān) 時(shí)間: 2025-3-28 13:58 作者: INERT 時(shí)間: 2025-3-28 15:57
Mechanisms of Disease Resistance,The hot phase of the ISM in nearby elliptical galaxies is observed to have temperatures in the range of 10 Mio degrees. While stellar wind and mass–loss by planetary nebulae are widely seen as the sources for the interstellar gas, there is no generally established model to explain the heating of the ISM (supernovae, AGN heating and collisions).作者: 不法行為 時(shí)間: 2025-3-28 19:45
Mireille Cormont,Vincent KaddaiHard X–ray surveys efficiently sample the obscured AGN population and in particular those with redder colors which would not be selected by UVX surveys. The discovery that a sizable fraction (~20%) of hard X–ray sources are also associated to extremely red objects (EROs) with optical to near–infrared colour R-K>5 is even more intriguing [1,2,1].作者: Mumble 時(shí)間: 2025-3-28 23:21
Evolution of the ISM in Elliptical Galaxiesand Black Hole Growth,The hot phase of the ISM in nearby elliptical galaxies is observed to have temperatures in the range of 10 Mio degrees. While stellar wind and mass–loss by planetary nebulae are widely seen as the sources for the interstellar gas, there is no generally established model to explain the heating of the ISM (supernovae, AGN heating and collisions).作者: 飛鏢 時(shí)間: 2025-3-29 06:57 作者: Transfusion 時(shí)間: 2025-3-29 08:12 作者: 嚴(yán)重傷害 時(shí)間: 2025-3-29 12:49
VLT Adaptive Optics Imaging of QSO at z ~ 2.5,the QSO and find that it is hosted by an elliptical of M. = –27.6. This result, though restricted to a single object, extends up to z=2.5 the finding that cosmic evolution of radio-loud hosts follows the trend expected for luminous and massive spheroids undergoing passive evolution.作者: Lime石灰 時(shí)間: 2025-3-29 19:03
https://doi.org/10.1007/978-1-4684-4574-9redicted to be heavily skewed towards fast-rotating Kerr holes, already in place at early epochs, and not to change significantly below redshift 5. Decaying MBH binaries may shape the innermost central regions of galaxies and should be detected in significant numbers by ..作者: 弄污 時(shí)間: 2025-3-29 21:16 作者: 商談 時(shí)間: 2025-3-30 03:58 作者: 圓錐 時(shí)間: 2025-3-30 05:55
Black Hole Accretion and Starbursts Triggered by Interactions in Hierarchical Galaxy Formation,t distribution of galaxies in K-band at . < 2 are all in good agreement with the existing observations concerning the bright galaxy population. As for the AGNs, our results closely fit the observed luminosity functions of QSOs, their density from .≈ 5 to .≈ 0, and the local .–. relation.作者: stress-test 時(shí)間: 2025-3-30 10:47 作者: Offset 時(shí)間: 2025-3-30 14:10
The cell wall and reproduction,unbind the residual gas in a time shorter for larger halos. The model accounts for a broad variety of dynamical, photometric and metallicity properties of early-type galaxies, for the .–. relation and for the local supermassive black-hole mass function.作者: 鋼盔 時(shí)間: 2025-3-30 19:31
ATTIPALLI R. REDDY,AGEPATI S. RAGHAVENDRA high redshifts. Our observations show no overdensity of star-forming galaxies in the fields of these quasars. The lack of (dust-free) luminous starburst companions indicates that the quasars may be the only massive galaxies in their vicinity undergoing a period of intense activity.作者: 貧窮地活 時(shí)間: 2025-3-30 23:15 作者: Invertebrate 時(shí)間: 2025-3-31 01:51
Evolutionary Aspects of Membrane Digestion,bout 2 - 5, thus higher redshift than previously studied EROs; (2) some of them could lie at redshifts above about 6 - 7, such that their Lyman-alpha emission is completely redshifted into the IR. In either case, these objects serve as a valuable probe of black hole growth and accretion activity in the early universe.作者: murmur 時(shí)間: 2025-3-31 05:35 作者: 奇怪 時(shí)間: 2025-3-31 10:56 作者: enlist 時(shí)間: 2025-3-31 13:22
,From First Galaxies to QSOs –Feeding the Baby Monsters,unbind the residual gas in a time shorter for larger halos. The model accounts for a broad variety of dynamical, photometric and metallicity properties of early-type galaxies, for the .–. relation and for the local supermassive black-hole mass function.作者: CON 時(shí)間: 2025-3-31 18:24
A Search for the First Massive Galaxy Clusters, high redshifts. Our observations show no overdensity of star-forming galaxies in the fields of these quasars. The lack of (dust-free) luminous starburst companions indicates that the quasars may be the only massive galaxies in their vicinity undergoing a period of intense activity.作者: curriculum 時(shí)間: 2025-3-31 22:53 作者: 遠(yuǎn)地點(diǎn) 時(shí)間: 2025-4-1 05:06 作者: 配置 時(shí)間: 2025-4-1 07:26
Why Are Only High-Redshift Obscured AGN Bright Submillimeter Sources?,nosity . and the redshift of the absorbed QSOs. The FIR emission of these objects is due to dust heated by starbursts, rather than reprocessed QSO emission [8,12]. The implied star formation rates (SFR) are >1000?M./y, sufficient to build a substantial fraction of a galaxy spheroid in only a few 100?Myr.作者: ALERT 時(shí)間: 2025-4-1 10:40
https://doi.org/10.1007/978-94-017-2660-3al black-holes comprise a larger fraction of the host galaxy mass at higher redshifts. In a scenario where quasars are triggered by halo mergers, this scaling, in combination with observed number counts imply that quasars have an episodic lifetime that is set by the dynamical time of a galactic disk rather than by the Salpeter time.作者: 礦石 時(shí)間: 2025-4-1 15:52
Physiology and Genetics of Reproductionies have yet been found at high redshift, indicating that the small-scale . emission regions of AGNs are insensitive to the dramatic changes on larger scales that occur from .. . observations are also constraining the environments of high-redshift AGNs, relevant emission processes, and high-redshift AGN demography.作者: 物質(zhì) 時(shí)間: 2025-4-1 21:59 作者: Ballerina 時(shí)間: 2025-4-2 01:50
