Wang, Yuanming Murphy, Tara Kaplan, David L. Klinner-Teo, Teresa Ridolfi, Alessandro Bailes, Matthew Crawford, Fronefield Dai, Shi Dobie, Dougal Gaensler, B. M.
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Published in
The Astrophysical Journal
We report the discovery of a highly circularly polarized, variable, steep-spectrum pulsar in the Australian Square Kilometre Array Pathfinder (ASKAP) Variables and Slow Transients (VAST) survey. The pulsar is located about 1° from the center of the Large Magellanic Cloud, and has a significant fractional circular polarization of ∼20%. We discovered...
Tedila, H. M. Yuen, R. Wang, N. Yuan, J. P. Wen, Z. G. Yan, W. M. Wang, S. Q. Dang, S. J. Li, D. Wang, P.
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Published in
The Astrophysical Journal
We report on the variation in the single-pulse emission from PSR J1900+4221 (CRAFTS 19C10) observed at frequency centered at 1.25 GHz using the Five-hundred-meter Aperture Spherical radio Telescope. The integrated pulse profile shows two distinct components, referred to here as the leading and trailing components, with the latter component also con...
Wang, Jingyi Kara, Erin Lucchini, Matteo Ingram, Adam van der Klis, Michiel Mastroserio, Guglielmo García, Javier A. Dauser, Thomas Connors, Riley Fabian, Andrew C.
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Published in
The Astrophysical Journal
We perform the first systematic search of all NICER archival observations of black hole (and candidate) low-mass X-ray binaries for signatures of reverberation. Reverberation lags result from the light travel time difference between the direct coronal emission and the reflected disk component, and therefore their properties are a useful probe of th...
Qu, Zhijie Koutroumpa, Dimitra Bregman, Joel N. Kuntz, Kip D. Kaaret, Philip
Published in
The Astrophysical Journal
Solar wind charge exchange (SWCX) is the primary contamination of soft X-ray emission lines from the Milky Way (MW) hot gas. We report a solar cycle (≈10 yr) temporal variation of observed O vii and O viii emission line measurements in the XMM-Newton archive, which is tightly correlated with the solar cycle traced by the sunspot number (SSN). This ...
Matchev, Konstantin T. Matcheva, Katia Roman, Alexander
Published in
The Astrophysical Journal
The physical characteristics and atmospheric chemical composition of newly discovered exoplanets are often inferred from their transit spectra, which are obtained from complex numerical models of radiative transfer. Alternatively, simple analytical expressions provide insightful physical intuition into the relevant atmospheric processes. The deep-l...
Inceoglu, Fadil Shprits, Yuri Y. Heinemann, Stephan G. Bianco, Stefano
Published in
The Astrophysical Journal
Through its magnetic activity, the Sun governs the conditions in Earth’s vicinity, creating space weather events, which have drastic effects on our space- and ground-based technology. One of the most important solar magnetic features creating the space weather is the solar wind that originates from the coronal holes (CHs). The identification of the...
Yonekura, Naoki Kajisawa, Masaru Hamaguchi, Erika Mawatari, Ken Yamada, Toru
Published in
The Astrophysical Journal
We searched for massive galaxy population in the known large-scale high-density structure of Lyα emitters (LAEs) at z = 2.39 near the radio galaxy 53W002 by using imaging data from B,V,i′,J,H,andKs bands taken with Suprime-Cam and MOIRCS on the Subaru telescope. We selected 62 protocluster member candidates by their JHK s -band colors and spectral ...
Luo, Qing Qiao, Bing-qiang Liu, Wei Cui, Shu-wang Guo, Yi-qing
Published in
The Astrophysical Journal
Local sources, such as the Geminga supernova remnant (SNR), may have played an important role in the anomaly of protons, electrons, and anisotropy in past works. In fact, there exist 12 SNRs around the solar system within 1 kpc. One question is whether other SNRs also possibly contribute to the spectra of nuclei and electrons, and explain the speci...
Nieves-Chinchilla, Teresa Alzate, Nathalia Cremades, Hebe Rodríguez-García, Laura G. Dos Santos, Luiz F. Narock, Ayris Xie, Hong Szabo, Adam Palmerio, Erika Krupar, Vratislav
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Published in
The Astrophysical Journal
We investigate the effects of the evolutionary processes in the internal magnetic structure of two interplanetary coronal mass ejections (ICMEs) detected in situ between 2020 November 29 and December 1 by the Parker Solar Probe (PSP). The sources of the ICMEs were observed remotely at the Sun in EUV and subsequently tracked to their coronal counter...
Umeda, Hiroya Ouchi, Masami Nakajima, Kimihiko Isobe, Yuki Aoyama, Shohei Harikane, Yuichi Ono, Yoshiaki Matsumoto, Akinori
Published in
The Astrophysical Journal
Strong high-ionization lines such as He ii of young galaxies are puzzling at high and low redshift. Although recent studies suggest the existence of nonthermal sources, whether their ionizing spectra can consistently explain multiple major emission lines remains a question. Here we derive the general shapes of the ionizing spectra for three local e...
