temperature is an importan environmental factor that inevitably determines the extent and geographical range of plants. in this study, the chilling induced responses of 11 desi chickpea genotypes were surveyed under growth chamber conditions to screen for chilling tolerance. electrolyte leakage (el) and lipid peroxidization (malondialdehide (mda)) methods were employed for the purpose. data ana...

We sought to determine the scale of scintillation in the interstellar plasma of PSR J0437−4715. We used the Very Long Baseline Array to obtain scintillation amplitude and phase data, from dynamic spectra at 327 MHz. We observe two scales of scintillation of pulsar PSR J0437−4715, differing by more than an order of magnitude in scintillation bandwidth. The widerbandwidth scale of scintillation t...

We observed PSR J0437−4715 with the FUV-MAMA detector of the Hubble Space Telescope Imaging Spectrometer (STIS) to measure the pulsar’s spectrum and pulsations. For the first time, UV emission from a millisecond pulsar is detected. The measured flux, (2.0± 0.2)× 10 erg s cm in the 1150–1700 Å range, corresponds to the luminosity LFUV = (4.7 ± 0.5) × 10 27 erg s, for the distance of 140 pc and n...

An independent analysis of the 326.5 MHz data obtained by Ooty Radio Telescope reveals no evidence for coherent diffractive radiation patterns in the millisecond pulsar PSR J0437−4715.

We discuss the discovery of ‘notch-like’ features in the mean pulse profile of the nearby, bright pulsar B0950+08. We compare these low-level features with those previously seen in the pulse profiles of pulsars J0437−4715 and B1929+10. While J0437−4715 is a binary millisecond pulsar and B0950+08 and B1929+10 are isolated, slow pulsars, all three pulsars are nearby and very bright. Furthermore, ...

A mathematical framework is presented for use in the experimental determination of the polarimetric response of observatory instrumentation. Elementary principles of linear algebra are applied to model the full matrix description of the polarization measurement equation by least-squares estimation of non-linear, scalar parameters. The formalism is applied to calibrate the center element of the ...

Drosophila eggshells display remarkable morphological diversity among species; however, the molecular origin of this structural diversification is mostly unknown. Here, we analyzed the dorsal ridge (DR), a lumen-like structure along the dorsal side of eggshells, from numerous Drosophila species. This structure varies in length and width across species, and is absent from D. melanogaster eggshel...

Using the recently upgraded Long Baseline Array, we have measured the trigonometric parallax of PSR J0437–4715 to better than 1% precision, the most precise pulsar distance determination made to date. Comparing this VLBI distance measurement to the kinematic distance obtained from pulsar timing, which is calculated from the pulsar’s proper motion and apparent rate of change of orbital period, g...

Analysis of 10 years of high-precision timing data on the millisecond pulsar PSR J0437 4715 has resulted in a model-independent kinematic distance based on an apparent orbital period derivative, Ṗb, determined at the 1.5% level of precision (Dk 1⁄4 157:0 2:4 pc), making it one of the most accurate stellar distance estimates published to date. The discrepancy between this measurement and a previ...