Ultrahigh power 38 W continuous-wave monolithic laser diode arrays
In: Applied Physics Letters. - Woodbury, NY : Inst., ISSN 1077-3118, Vol. 52, No. 26 (1988), p. 2220-2221 Zugang:
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1988
Continuous-wave output power levels of 38 W from one facet have been obtained from a 1 cm monolithic AlGaAs laser array with a 2 mm total active aperture width. One of the diodes has been operated under constant current conditions (initial output power of 5 W) at room temperature for over 1100 h. mehr
Enhanced electrical conductivity of polydiacetylene crystals by chemical doping and ion implantation
In: Journal of Applied Physics. - [S.l.], ISSN 1089-7550, Vol. 60, No. 8 (1986), p. 2788-2796 Zugang:
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1986
The conductivity enhancement in polydiacetylene (PDA) crystals due to chemical doping and ion implantation was measured and analyzed in relation to their spin concentration and photocurrent decay based on the structural and optical information obtained through infrared and visible reflectivity... mehr
An unexpectedly rapid decline in the X-ray afterglow emission of long γ-ray bursts
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 436, No. 7053 (2005), p. 985-988 Zugang:
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2005
‘Long’ γ-ray bursts (GRBs) are commonly accepted to originate in the explosion of particularly massive stars, which give rise to highly relativistic jets. Inhomogeneities in the expanding flow result in internal shock waves that are believed to produce the γ-rays we see. As the jet travels... mehr
Gamma-ray bursts: Huge explosion in the early Universe
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 440, No. 7081 (2006), p. 164-164 Zugang:
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2006
Long gamma-ray bursts (GRBs) are bright flashes of high-energy photons that can last for tens of minutes; they are generally associated with galaxies that have a high rate of star formation and probably arise from the collapsing cores of massive stars, which produce highly relativistic jets... mehr
An origin for short γ-ray bursts unassociated with current star formation
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 438, No. 7070 (2005), p. 994-996 Zugang:
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2005
Two short (< 2 s) γ-ray bursts (GRBs) have recently been localized and fading afterglow counterparts detected. The combination of these two results left unclear the nature of the host galaxies of the bursts, because one was a star-forming dwarf, while the other was probably an elliptical... mehr
Discovery of the short γ-ray burst GRB 050709
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 437, No. 7060 (2005), p. 855-858 Zugang:
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2005
Gamma-ray bursts (GRBs) fall into two classes: short-hard and long-soft bursts. The latter are now known to have X-ray and optical afterglows, to occur at cosmological distances in star-forming galaxies, and to be associated with the explosion of massive stars. In contrast, the distance scale,... mehr
A giant γ-ray flare from the magnetar SGR 1806–20
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 434, No. 7037 (2005), p. 1107-1109 Zugang:
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2005
Two classes of rotating neutron stars—soft γ-ray repeaters (SGRs) and anomalous X-ray pulsars—are magnetars, whose X-ray emission is powered by a very strong magnetic field (B ≈ 1015 G). SGRs occasionally become ‘active’, producing many short X-ray bursts. Extremely rarely, an SGR... mehr
The association of GRB 060218 with a supernova and the evolution of the shock wave
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 442, No. 7106 (2006), p. 1008-1010 Zugang:
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2006
Although the link between long γ-ray bursts (GRBs) and supernovae has been established, hitherto there have been no observations of the beginning of a supernova explosion and its intimate link to a GRB. In particular, we do not know how the jet that defines a γ-ray burst emerges from the star's... mehr
A short γ-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 437, No. 7060 (2005), p. 851-854 Zugang:
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2005
Gamma-ray bursts (GRBs) come in two classes: long (> 2 s), soft-spectrum bursts and short, hard events. Most progress has been made on understanding the long GRBs, which are typically observed at high redshift (z ≈ 1) and found in subluminous star-forming host galaxies. They are likely to be... mehr
Functional annotation of a full-length mouse cDNA collection
in: Nature . - London [u.a.] : Nature Publising Group, ISSN 1476-4687, Vol. 409, No. 6821 (2001), p. 685-690 Zugang:
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2001
The RIKEN Mouse Gene Encyclopaedia Project, a systematic approach to determining the full coding potential of the mouse genome, involves collection and sequencing of full-length complementary DNAs and physical mapping of the corresponding genes to the mouse genome. We organized an international... mehr
Measurements of cross sections and charge asymmetries for e^+e^-->τ^+τ^-and e^+e^-->μ^+μ^-for s from 52 to 57 GeV
in: Physics Letters B, in: Physics Letters B . - Amsterdam : Elsevier, ISSN 0370-2693, ZDB-ID 1466612-1 Vol. 218, No. 1 (1989), p. 112-118
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