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Nearby sources may contribute to cosmic-ray electron (CRE) structures at high energies. Recently, the first DAMPE results on the CRE flux hinted at a narrow excess at energy ~1.4 TeV. We show that in general a spectral structure with a…

High Energy Astrophysical Phenomena · Physics 2018-05-09 Xian-Jun Huang , Yue-Liang Wu , Wei-Hong Zhang , Yu-Feng Zhou

By assuming that not only counter-ions but DNA molecules as well are thermally distributed according to a Boltzmann law, we propose a modified Poisson-Boltzmann equation at the classical level as starting point to compute the effects of…

Quantitative Methods · Quantitative Biology 2015-05-13 Alfredo Iorio , Samik Sen , Siddhartha Sen

We have studied several radio galaxies at low radio frequencies using GMRT. Our prime motivation to detect faint radio emission at very low frequencies due to low energy electrons. Our results provide evidence that there exists two classes…

Cosmology and Nongalactic Astrophysics · Physics 2010-01-22 Dharam Vir Lal

We investigate the effects of a large-scale background hypermagnetic field on the electroweak phase transition. We propose a model in which an effective weak angle varies during the electroweak phase transition and upon its use we show…

High Energy Physics - Phenomenology · Physics 2022-05-31 H. Abedi , M. Ahmadvand , S. S. Gousheh

Cancer treatment with radiotherapy aims to kill tumor cells and spare healthy tissue.Thus,the experimentally observed sparing of healthy tissue by the FLASH effect during irradiations with ultra-high dose rates (UHDR) enables clinicians to…

Theoretical and experimental evidences support the hypothesis that extremely low-frequency electromagnetic fields can affect voltage-gated channels. Little is known, however, about their effect on potassium channels. Kv1.3, a member of the…

Subcellular Processes · Quantitative Biology 2015-08-26 Claudia Cecchetto , Marta Maschietto , Pasquale Boccaccio , Stefano Vassanelli

A novel nonlinear effect of anomalously deep penetration of an external radio frequency electric field into a plasma is discribed. A self-consistent kinetic treatment reveals a transition region between the sheath and the plasma. Because of…

Plasma Physics · Physics 2016-09-08 Igor D. Kaganovich

We demonstrate that near threshold decay processes may be accelerated by repeated measurements. Examples include near threshold photodetachment of an electron from a negative ion, and spontaneous emission in a cavity close to the cutoff…

Quantum Physics · Physics 2009-10-31 Maciej Lewenstein , Kazimierz Rzazewski

We present results on Rydberg atom-based electric field sensing in the range of 1 kHz - 300 MHz, using a three-photon Rydberg excitation scheme and a transverse electromagnetic (TEM) line waveguide to apply low-frequency rf fields to the…

The discovery of long-lived electrostatic coherent structures with large-amplitude electric fields ($1 \leq E \leq 500 $ mV/m) by the Van Allen Probes has revealed alternative routes through which planetary radiation belts' acceleration can…

Plasma Physics · Physics 2017-09-13 Adnane Osmane , Drew L. Turner , Lynn B. Wilson , Andrew P. Dimmock , Tuija Pulkkinen

Interaction with the axion dark matter (DM) field generates an oscillating nuclear electric dipole moment (EDM) with a frequency corresponding to the axion's Compton frequency. Within an atom, an oscillating EDM can drive electric dipole…

Atomic Physics · Physics 2019-09-12 Victor V. Flambaum , Dmitry Budker , Arne Wickenbrock

We present a study of the properties of strong 0.8-3.0 Hz quasi-periodic oscillations (QPOs) that occurred during 1997 RXTE observations of the microquasar GRS 1915+105 in the low-hard state. The high count rates allow us to track…

Astrophysics · Physics 2009-10-31 John A. Tomsick , Philip Kaaret

We combine the GMRT low frequency radio observations of SN 1993J with the VLA high frequency radio data to get a near simultaneous spectrum around day 3200 since explosion. The low frequency measurements of the supernova determine the…

Astrophysics · Physics 2009-11-10 Poonam Chandra , Alak Ray , Sanjay Bhatnagar

We explore and contrast the capabilities of future colliders to probe the nature of the electro-weak phase transition. We focus on the real singlet scalar field extension of the Standard Model, representing the most minimal, yet most…

High Energy Physics - Phenomenology · Physics 2021-08-27 Andreas Papaefstathiou , Graham White

We estimate the frequency of intermittent hypermutation events and disruptions of planetary/satellite photochemistry due to ultraviolet radiation from core collapse supernova explosions. Calculations are presented for planetary systems in…

Astrophysics · Physics 2007-05-23 John M. Scalo , J. Craig Wheeler , Peter Williams

Flexibility of short DNA helices is important for the biological functions such as nucleosome formation and DNA-protein recognition. Recent experiments suggest that short DNAs of tens of base pairs (bps) may have apparently higher…

Biological Physics · Physics 2015-06-24 Yuan-Yan Wu , Lei Bao , Xi Zhang , Zhi-Jie Tan

We present an updated EDM effective electric field of $E_{\text{eff}} = 75.2\left[\frac{\rm GV}{\rm cm}\right]$ and the electron-nucleon scalar-pseudoscalar interaction constant $W_S=107.8$ [kHz] for the ${^3\Delta}_1$ science state of ThO.…

Atomic Physics · Physics 2016-05-11 Malika Denis , Timo Fleig

The electromagnetic properties of neutrinos have attracted considerable attention from researchers for many decades (see [1] for a review). However, until recently, there was no indication in favour of nonzero electromagnetic properties of…

High Energy Physics - Phenomenology · Physics 2021-02-11 Alexander Studenikin

Although DNA damage is widely viewed as a critical target for the induction of cell killing by ionizing radiation, the exact nature of DNA damage responsible for these effects is unknown. To address this issue, the probability of forming…

Biological Physics · Physics 2016-08-16 Pavel Kundrát , Robert D. Stewart

The existence of electric fields close to their critical value $E_c=\frac{m_e^2 c^3}{e \hbar}$ has been proved for massive cores of $10^7$ up to $10^{57}$ nucleons using a proton distribution of constant density and a sharp step function at…

Solar and Stellar Astrophysics · Physics 2009-03-26 Jorge A. Rueda H. , B. Patricelli , M. Rotondo , R. Ruffini , S-S. Xue