Large field surveys of NH3, C2S, CO and CO in the L1551 dark cloud have revealed a prolate, pre-protostellar molecular core (L1551-MC) in a relatively quiescent region to the northwest of the well-known IRS 5 source. The kinetic temperature is measured to be 9K, the total mass is ∼ 2M⊙, and the average particle density is 10 –10 cm . L1551-MC is 2 .25×1 .11 in projection oriented at a position ...

Abstract In this work we study the properties of rigidly rotating neutral dust solutions in general relativity. This class gained relevance recently due to applications dynamics spiral galaxies. We show that could be interpreted as a “rigid body” relativity and analyze different respect disk special relativity: for example, relativistic counterpart shows no Doppler effect light signal emitted r...

We present millimeter interferometric observations of the young stellar object SVS13 in NCG1333 in the N2H + (1–0) line and at 1.4 and 3mm dust continuum, using the IRAM Plateau de Bure interferometer. The results are complemented by infrared data from the Spitzer Space Telescope. The millimeter dust continuum images resolve four sources (A, B, C, and VLA3) in SVS13. With the dust continuum ima...

An Integral Sliding Mode (ISM) based robustified Linear Parameter Varying (LPV) control is presented for a laboratory scale ball on beam balancer system. The inherent input channel nonlinearity and under-actuated coupled dynamics make it challenging problem. ISM control, being famous reaching phase elimination, operates under the action of which usually an algebraic sum continuous discontinuous...

the rotation curves of a sample of 46 low- and high-surface brightness galaxies are considered in the context of milgrom's modi_ed dynamics (mond) to test a new interpolating function proposed by zhao et al. (2010) [1] and compare with the results of simple interpolating function. the predicted rotation curves are calculated from the total baryonic matter based on the b-band surface photometry,...