Results 31 to 40 of about 7,672 (248)

Initial mass function of intermediate-mass black hole seeds [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
MNRAS, in press.
Ferrara, A., SALVADORI, STEFANIA, Yue, B., Schleicher, D.   +3 more
openaire   +4 more sources

Mass Measurements of Stellar and Intermediate-Mass Black Holes [PDF]

Space Science Reviews, 2013
28 pages, 12 figures. Accepted for publication in Space Science Reviews (DOI 10.1007/s11214-013-0030-6). Also to appear in hard cover in the Space Sciences Series of ISSI "The Physics of Accretion onto Black Holes" (Springer Publisher).
Casares, J., Jonker, P.G.
openaire   +6 more sources

Near-infrared Variability Detected in the Young Star-forming Dwarf Galaxy SBS 0335-052E

The Astrophysical Journal
SBS 0335-052E is a young star-forming dwarf galaxy with a total stellar mass of M _*  ≲ 10 ^8 M _⊙ and an extremely low metallicity ( Z  ∼ 1/40 Z _⊙ ), which has long been considered to be devoid of an active galactic nucleus (AGN).
Shun Hatano, Mitsuru Kokubo, Masami Ouchi, Kimihiko Nakajima, Toshihiro Kawaguchi, Satoshi Kikuta, Nozomu Tominaga, Yi Xu, Kuria Watanabe, Yuichi Harikane, Yuki Isobe, Akinori Matsumoto, Moka Nishigaki, Yoshiaki Ono, Masato Onodera, Yuma Sugahara, Hiroya Umeda, Yechi Zhang, Ryotaro Chiba, Takashi J. Moriya   +19 more
doaj   +1 more source

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

The Intermediate-mass Black Hole Reverberation Mapping Project: First Detection of Mid-infrared Lags in Prototypical Intermediate-mass Black Holes in NGC 4395 and POX 52

The Astrophysical Journal Letters
The search for robust evidence of intermediate-mass black holes (IMBHs) is crucial for understanding the black hole seeding process and the formation of supermassive black holes in the early Universe.
Jingbo Sun, Hengxiao Guo, Wenwen Zuo, Paulina Lira, Minfeng Gu, Philip G. Edwards, Shu Wang, Jamie Stevens, Tao An, Samuzal Barua, Zhen-yi Cai, Haicheng Feng, Alok C. Gupta, Luis C. Ho, Dragana Ilić, Andjelka B. Kovačević, ShaSha Li, Mar Mezcua, Luka Č. Popović, Paula Sánchez-Sáez, Mouyuan Sun, Rongfeng Shen, Vivian U, Oliver Vince, Junxian Wang, Xuebing Wu, Zhefu Yu, Zhenya Zheng   +27 more
doaj   +1 more source

An intermediate‐mass black hole candidate in M51? [PDF]

Astronomische Nachrichten, 2016
AbstractWe present the current results of an investigation into M51 ULX‐7, using archival data from XMM‐Newton, Chandra and NuSTAR, and optical and radio data from HST and VLA. The source has a consistently hard power‐law X‐ray spectrum and high short‐term variability.
openaire   +3 more sources

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Interpretable Machine Learning for Finding Intermediate-mass Black Holes

The Astrophysical Journal
Definitive evidence that globular clusters (GCs) host intermediate-mass black holes (IMBHs) is elusive. Machine-learning (ML) models trained on GC simulations can in principle predict IMBH host candidates based on observable features.
Mario Pasquato, Piero Trevisan, Abbas Askar, Pablo Lemos, Gaia Carenini, Michela Mapelli, Yashar Hezaveh   +6 more
doaj   +1 more source

Tidal disruption of white dwarfs by intermediate mass black holes

EPJ Web of Conferences, 2012
Modeling ultra-close encounters between a white dwarf and a spinning, intermediate mass black hole requires a full general relativistic treatment of gravity. This paper summarizes results from such a study.
Bode T., Shcherbakov R.V., Haas R., Laguna P.   +3 more
doaj   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source