Results 81 to 90 of about 136,010 (238)

Rice Black-streaked Dwarf Virus Preparation and Infection on Rice [PDF]

BIO-PROTOCOL, 2017
Rice black-streaked dwarf virus (RBSDV), a member of genus Fijivirus in the family Reoviridae, infects rice, maize, barley and wheat, and can seriously affect crop yields. RBSDV is transmitted by the small brown planthopper (Laodelphax striatellus, SBPH) in a persistent manner.
Hengmu Zhang, Zhang Hehong, Xiaoxiang Tan, Sun Zongtao, Chen Jianping, Kaili Xie   +5 more
openaire   +4 more sources

Intermediate-mass black holes: finding of episodic, large-scale, and powerful jet activity in a dwarf galaxy [PDF]

, 2023
Jun Yang, Z. Paragi, S. Frey, Leonid Gurvits, Mai Liao, Xiang Liu, Lang Cui, Xiaolong Yang, Wen Chen, E. Varenius, J. E. Conway, Rurong Chen, Ning Chang   +12 more
openalex   +2 more sources

X-Ray Bright Active Galactic Nuclei in Local Dwarf Galaxies: Insights from eROSITA

The Astrophysical Journal
Although supermassive black holes (SMBHs) reside in the heart of virtually every massive galaxy, it remains debated whether dwarf galaxies commonly host SMBHs. Because low-mass galaxies may retain memory of the assembly history of their black holes (BHs),
Andrea Sacchi, Ákos Bogdán, Urmila Chadayammuri, Angelo Ricarte   +3 more
doaj   +1 more source

Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies—1. Effect of Seed BH Mass

Frontiers in Astronomy and Space Sciences, 2017
We use a semi-analytic model of galaxy formation and investigate how the mass of a seed black hole affect the scaling relation between black hole mass and bulge mass at z ~ 0.
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Ryu Makiya, Ryu Makiya, Tomoaki Ishiyama, Yoshiki Matsuoka, Masahiro Nagashima, Motohiro Enoki, Taira Oogi, Masakazu A. R. Kobayashi   +10 more
doaj   +1 more source

X-rays from Quiescent Low-Mass X-ray Binary Transients

, 2000
I argue that it is very unlikely that X-rays from quiescent black-hole low-mass X-ray binary transients are emitted by coronae of companion stars. I show that in a simple model in which these X-rays are emitted by an ADAF filling the inner part of an ...
Lasota, Jean-Pierre
core   +2 more sources

Finding Faint Intermediate-mass Black Holes in the Radio Band

, 2004
We discuss the prospects for detecting faint intermediate-mass black holes, such as those predicted to exist in the cores of globular clusters and dwarf spheroidal galaxies.
A. Bouchard, A. K. Tzioumis, A. Pasquali, A.V. Fillipenko, C.G. Tinney, E. Gallo, G.A. Drukier, G.C. Bower, H. Baumgardt, H. Falcke, H.M. Johnston, J. Gerssen, J. Gerssen, J. Magorrian, J. Malzac, J.E. Greene, J.E. Grindlay, J.J. Condon, J.N. Bahcall, K. Gebhardt, L.C. Ho, M. Mateo, M. Ricotti, M.C. Miller, P.C. Freire, R. Narayan, R. P. Fender, R. Perna, R.P. Fender, S. Ichimaru, S.F. Portegies Zwart, T. J. Maccarone, T.E. Strohmayer, T.H. Markert, T.J. Maccarone, Z. Zang   +35 more
core   +2 more sources

A new super-soft X-ray source in the Small Magellanic Cloud: Discovery of the first Be/white dwarf system in the SMC?

, 2011
The Small Magellanic Cloud (SMC) hosts a large number of Be/X-ray binaries, however no Be/white dwarf system is known so far, although population synthesis calculations predict that they might be more frequent than Be/neutron star systems.
Coe, M. J., Haberl, F., La Palombara, N., Mereghetti, S., Owen, R. A., Pietsch, W., Sturm, R., Udalski, A.   +7 more
core   +1 more source

Exploring X-Ray Properties of Low-metallicity Dwarf Galaxies

The Astrophysical Journal
One of the primary outstanding questions in extragalactic astronomy is the formation and early evolution of the supermassive black holes that are seen in nearly every massive galaxy.
Jenna M. Cann, Kimberly A. Weaver, Ryan W. Pfeifle, Nathan J. Secrest, Shobita Satyapal, Mario Gliozzi   +5 more
doaj   +1 more source

A Luminous X-Ray Active Galactic Nucleus in the Dwarf–Dwarf Galaxy Merger RGG 66

The Astrophysical Journal
We present the discovery of a luminous X-ray active galactic nucleus (AGN) in the dwarf galaxy merger RGG 66. The black hole is predicted to have a mass of M _BH ∼ 10 ^5.4 M _⊙ and to be radiating close to its Eddington limit ( L _bol / L _Edd ∼ 0.75 ...
Seth J. Kimbrell, Amy E. Reines
doaj   +1 more source

Model Atmospheres for Irradiated Stars in pre-Cataclysmic Variables

, 2004
Model atmospheres have been computed for M dwarfs that are strongly irradiated by nearby hot companions. A variety of primary and secondary spectral types are explored in addition to models specific to four known systems: GD 245, NN Ser, AA Dor, and UU ...
Bell S. A., Brett J. M., Brett J. M., Catalan M. S., Eddington A. S., Kirbiyik H., Marsh T. R., Nordlund A., Paczynski B., Vaz L. P. R.   +9 more
core   +1 more source