The 3D Structure of N132D in the LMC: A Late-Stage Young Supernova Remnant

We have used the Wide Field Spectrograph (WiFeS) on the 2.3m telescope at Siding Spring Observatory to map the [O III] 5007{\AA} dynamics of the young oxygen-rich supernova remnant N132D in the Large Magellanic Cloud. From the resultant data cube, we have been able to reconstruct the full 3D structure of the system of [O III] filaments. The majority of the ejecta form a ring of ~12pc in diameter inclined at an angle of 25 degrees to the line of sight. We conclude that SNR N132D is approaching the end of the reverse shock phase before entering the fully thermalized Sedov phase of evolution. We speculate that the ring of oxygen-rich material comes from ejecta in the equatorial plane of a bipolar explosion, and that the overall shape of the SNR is strongly influenced by the pre-supernova mass loss from the progenitor star. We find tantalizing evidence of a polar jet associated with a very fast oxygen-rich knot, and clear evidence that the central star has interacted with one or more dense clouds in the surrounding ISM.Comment: Accepted for Publication in Astrophysics & Space Science, 18pp, 8 figure

Galaxy And Mass Assembly (GAMA): data release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions

Galaxie

Kerr-Lens Mode-Locked Visible Transitions Of A Pr:Ylf Laser

We report what is to our knowledge the first Kerr-lens mode locking of the visible transitions at 607 and 639 nm in Pr3+:YLF. Initiation of the self-mode locking took place through the use of liquid saturable absorbers to establish saturation parameters, and it was carried out in optimized all-solid-state laser configurations (but with gas-laser pumping) with thin (\u3c100-μm) colloidally colored CdSeS glasses. Pulse durations were in the range of 8–10 ps. © 1995, Optical Society of America

Pulse evolution in cw femtosecond Cr\u3csup\u3e3+\u3c/sup\u3e :LiSrAlF6 lasers mode-locked with MQW saturable absorbers

The spectral and temporal evolution of a Cr3+:LiSrAlF6 laser, passively mode-locked using a multiple quantum well saturable absorber, has been investigated to elucidate the self-starting behaviour. © 1994

Self-Starting Kerr-Lens Mode-Locked Femtosecond Cr\u3csup\u3e4+\u3c/sup\u3e:Yag And Picosecond Pr\u3csup\u3e3+\u3c/sup\u3e:Ylf Solid-State Lasers

We have observed true self-starting Kerr-lens mode locking in two distinct solid-state laser systems operating at room temperature by optimizing the cavity geometry to maximize the amplitude modulation with respect to the intracavity power variation. Pulses of 15 ps have been obtained from a Pr3+:-YLF laser system operating at 607 nm, and 53-fs pulses have been obtained from Cr4+:YAG at 1.54 μm. © 1996 Optical Society of America