Results 61 to 70 of about 70,958 (245)

Ultraviolet Radiation and Neutrinos: Two Messengers from CCSNe in the CSM Scenario

The Astrophysical Journal
Massive stars (>8 M _⊙ ) often undergo intense mass loss through winds or eruptive events in the final stages of their evolution, leading to the formation of a dense circumstellar medium (CSM). This material, expelled months to years before core collapse,
Silvia Gagliardini, Simone Dall’Osso, Dafne Guetta, Angela Zegarelli, Silvia Celli, Antonio Capone, Irene Di Palma   +6 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Inferring Kilonova Ejecta Photospheric Properties from Early Blackbody Spectra

The Astrophysical Journal
We present simple analytic corrections to the standard blackbody fitting used for early kilonova emission. We consider a spherical, relativistically expanding shell that radiates thermally at a single temperature in its own rest frame.
Gilad Sadeh
doaj   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Tidal Disruption of a Star on a Nearly Circular Orbit

The Astrophysical Journal
We consider Roche lobe overflow (RLO) from a low-mass star on a nearly circular orbit, onto a supermassive black hole (SMBH). If mass transfer is unstable, its rate accelerates in a runaway process, resulting in highly super-Eddington mass accretion ...
Itai Linial, Eliot Quataert
doaj   +1 more source

Investigation of laser dynamics, modulation and control by means of intra-cavity time varying perturbation [PDF]

The generation of tunable visible, infrared, and ultraviolet light is examined, along with the control of this light by means of novel mode-locking and modulation techniques.
Bekkers, G. W., Bloom, D. M., Harris, S. E., Kuizenga, D. J., Kung, A. H., Newton, J. H., Phillion, D. W., Siegman, A. E., Young, J. F.   +8 more
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source

Fast Transients from Magnetic Disks around Nonspinning Collapsar Black Holes

The Astrophysical Journal Letters
Most black holes (BHs) formed in collapsing stars have low spin, though some are expected to acquire a magnetic accretion disk during the collapse. While such BH disks can launch magnetically driven winds, their physics and observational signatures have ...
Justin Bopp, Ore Gottlieb
doaj   +1 more source

The Robo-AO-2 facility for rapid visible/near-infrared AO imaging and the demonstration of hybrid techniques [PDF]

, 2018
We are building a next-generation laser adaptive optics system, Robo-AO-2, for the UH 2.2-m telescope that will deliver robotic, diffraction-limited observations at visible and near-infrared wavelengths in unprecedented numbers.
Baranec, Christoph, Chun, Mark, Connelley, Michael, de Pater, Imke, Dekany, Richard, Griffiths, Richard, Guyon, Olivier, Hall, Donald, Hammel, Heidi, Hodapp, Klaus, Huber, Daniel, Kasliwal, Mansi, Kissler-Patig, Markus, Kuchner, Marc, Lau, Ryan, Law, Nicholas M., Liu, Michael, Magnier, Eugene, Meech, Karen, Moore, Anna, Ofek, Eran, Riddle, Reed, Simon, Amy, Takamiya, Marianne, van Dam, Marcos A., Wong, Mike   +25 more
core   +1 more source

New views on the emission and structure of the solar transition region

, 2010
The Sun is the only star that we can spatially resolve and it can be regarded as a fundamental plasma laboratory of astrophysics. The solar transition region (TR), the layer between the solar chromosphere and corona, plays an important role in solar wind
Aiouaz, Aiouaz, Athay, Athay, Axford, Bartoe, Bartoe, Bartoe, Basri, Bocchialini, Bohlin, Bonnet, Brekke, Brosius, Brosius, Brosius, Brown, Brueckner, Brueckner, Brueckner, Brynildsen, Büchner, Büchner, Chae, Chae, Chae, Chen, Chen, Chen, Chuanyi Tu, Culhane, Curdt, Curdt, Curdt, Curdt, Curdt, Curdt, Dammasch, Dammasch, De Pontieu, Del Zanna, Dere, Dere, Dere, Doschek, Doschek, Doschek, Dowdy, Doyle, Doyle, Doyle, Doyle, Eckart Marsch, Evershed, Evershed, Falconer, Fang, Feldman, Feldman, Feldman, Fontenla, Fontenla, Foukal, Foukal, Foukal, Gabriel, Golub, Gontikakis, Gouttebroze, Gouttebroze, Griffiths, Gunár, Guo, Habbal, Hansteen, Hansteen, Harra, Harrison, Harrison, Hassler, He, He, He, Heinzel, Hui Tian, Hénoux, Ichimoto, Imada, Innes, Innes, Jiansen He, Jin, Jordan, Katsukawa, Kneer, Lemaire, Lemaire, Lemaire, Li, Liu, Longcope, Madjarska, Madjarska, Magara, Mariska, Mariska, Marsch, Marsch, Marsch, Marsch, Marsch, Marsch, McClymont, McIntosh, McIntosh, McIntosh, McIntosh, Metcalf, Nicolas, Nicolas, Parnell, Patsourakos, Peter, Peter, Peter, Peter, Peter, Popescu, Priest, Raju, Ravindra, Reeves, Sakao, Santos, Schmieder, Schrijver, Seehafer, Sheeley, Solanki, Stucki, Teriaca, Teriaca, Teriaca, Teriaca, Teriaca, Teriaca, Tian, Tian, Tian, Tian, Tian, Tian, Tian, Tian, Tian, Tian, Tian, Tian, Tu, Tu, Tu, Ugarte-Urra, Ugarte-Urra, Ugarte-Urra, Vernazza, Vernazza, Vial, Vial, Vial, Wang, Wang, Warren, Watanabe, Webb, Werner Curdt, Wiegelmann, Wiegelmann, Wiegelmann, Wilhelm, Wilhelm, Wilhelm, Wilhelm, Wilhelm, Xia, Xia, Xia, Xu, Zhang, Zhang, Zhang, Zhang, Zhang, Zhang   +192 more
core   +1 more source