OCTOCAM – a New Workhorse Instrument for Transient Follow-up at Gemini South

AbstractOctocam is an 8-channel VIS and NIR imager and spectrograph to be installed at Gemini South in 2022. It provides simultaneous imaging in g’,r’,i’,z,Y,J,H,KS bands or simultaneous spectroscopy at a resolution of ∼4000, together with high time-resolution options. Additional capabilities such as spectropolarimetry or an Integral Field Unit could be added as an upgrade later. These properties makes it very well suited as a follow-up instrument for transient searches. It is planned as a dedicated follow-up instrument for LSST, and will start operations at the same time as the LSST main survey. Octocam was conceived as a consortium consisting of South-West Research Institute in San Antonio, Texas, IAA-CSIC in Granada, FRACTAL SLNE in Madrid, and George Washington University.

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High-Time-Resolution Astrophysics using the Thai 2.4-m Telescope with Ultraspec

Proceedings of the International Astronomical Union ◽

10.1017/s1743921318002533 ◽

2017 ◽

Vol 14 (S339) ◽

pp. 185-188

Author(s):

P. Irawati

Keyword(s):

Time Resolution ◽

High Speed ◽

Period Change ◽

Low Noise ◽

High Time ◽

High Time Resolution ◽

Third Body ◽

Data Set ◽

High Speed Photometry

AbstractThe Thai National Observatory (TNO) is equipped with a 2.4-m Ritchey-Chretien telescope and the high-speed versatile Ultraspec camera. The instrument employs a low-noise frame-transfer EMCCD, suitable for the observation of faint objects and for high-time-resolution astrophysics. We present some of the results obtained in the first four years of operation, focusing particularly on fast photometry of lunar and stellar occultations, and follow-up efforts on a few white-dwarf binaries. Among the latter is the polar cataclysmic variable UZ For. This system displays period changes and is suspected of hosting circumbinary planets. Our high-speed photometry data show a decreasing trend in the O–C diagram of UZ For. Using our new data set, we will investigate whether the period change in this binary is due to a possible third body, or to other mechanism(s).

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H i-MaNGA: H i follow-up for the MaNGA survey

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stz1889 ◽

2019 ◽

Vol 488 (3) ◽

pp. 3396-3405 ◽

Cited By ~ 6

Author(s):

Karen L Masters ◽

David V Stark ◽

Zachary J Pace ◽

Frederika Phipps ◽

Wiphu Rujopakarn ◽

...

Keyword(s):

Gas Content ◽

Data Set ◽

Sky Surveys ◽

Nearby Galaxies ◽

L Band ◽

Field Unit ◽

Green Bank Telescope ◽

Integral Field ◽

Cross Match

Abstract We present the H i-MaNGA programme of H i follow-up for the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey. MaNGA, which is part of the Fourth phase of the Sloan Digital Sky Surveys, is in the process of obtaining integral field unit spectroscopy for a sample of ∼10 000 nearby galaxies. We give an overview of the H i 21cm radio follow-up observing plans and progress and present data for the first 331 galaxies observed in the 2016 observing season at the Robert C. Bryd Green Bank Telescope. We also provide a cross-match of the current MaNGA (DR15) sample with publicly available H i data from the Arecibo Legacy Fast Arecibo L-band Feed Array survey. The addition of H i data to the MaNGA data set will strengthen the survey’s ability to address several of its key science goals that relate to the gas content of galaxies, while also increasing the legacy of this survey for all extragalactic science.

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A Radiation Oncology Departmental Policy for the 2019 Novel Coronavirus (COVID-19) Pandemic

10.20944/preprints202003.0350.v1 ◽

2020 ◽

Cited By ~ 1

Author(s):

Yuan James Rao ◽

Destie Provenzano ◽

Hiram A. Gay ◽

Paul W. Read ◽

Martin Ojong ◽

...

Keyword(s):

Radiation Oncology ◽

Action Plan ◽

Washington Dc ◽

George Washington ◽

First Case ◽

Critical Patients ◽

Novel Coronavirus ◽

Washington University ◽

George Washington University

The COVID-19 pandemic is placing unprecedented stress on healthcare systems around the world. Although Radiation Oncology Departments are not at the frontline of fighting this infectious disease, it is important to implement COVID-19 policies to reduce risk of staff and patient exposure, and to limit the risk of department shutdown or downtime. This brief report describes the policy implemented at George Washington University Radiation Oncology to manage the risks of COVID-19. This includes a General Statement related to the priorities of the Radiation Oncology department, a screening procedure for new and follow-up patients, management policies for critical and non-critical patients with COVID-19 or under quarantine, a policy for the management of patients currently under treatment who are diagnosed or placed in quarantine, a clinical escalation action plan, guidelines for staff meetings and travel, and procedure management. This policy was implemented at George Washington University Radiation Oncology after the first case of COVID-19 was reported in Washington DC on March 7, 2020.

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Development of the prototype integral field unit for prompt follow-up spectroscopy of gamma-ray bursts

10.1117/12.856349 ◽

2010 ◽

Author(s):

Shinobu Ozaki ◽

Ikuru Iwata ◽

Eiji Kambe ◽

Michitoshi Yoshida ◽

Kiichi Okita ◽

...

Keyword(s):

Gamma Ray ◽

Gamma Ray Bursts ◽

Field Unit ◽

Integral Field

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Solar Corona Investigation by the Coronal Line Photometer at Lomnický Peak

International Astronomical Union Colloquium ◽

10.1017/s0252921100025744 ◽

1994 ◽

Vol 144 ◽

pp. 431-434

Author(s):

M. Minarovjech ◽

M. Rybanský

Keyword(s):

Solar Corona ◽

Time Resolution ◽

Active Regions ◽

High Time ◽

High Time Resolution ◽

List Type ◽

Type Number ◽

Coronal Line ◽

Global Cycle

AbstractThis paper deals with a possibility to use the ground-based method of observation in order to solve basic problems connected with the solar corona research. Namely:1.heating of the solar corona2.course of the global cycle in the corona3.rotation of the solar corona and development of active regions.There is stressed a possibility of high-time resolution of the coronal line photometer at Lomnický Peak coronal station, and use of the latter to obtain crucial observations.

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Periodic Variations in the Coronal Green Line Intensity and their Connection with the White-light Coronal Structures

International Astronomical Union Colloquium ◽

10.1017/s0252921100064484 ◽

2000 ◽

Vol 179 ◽

pp. 197-200

Author(s):

Milan Minarovjech ◽

Milan Rybanský ◽

Vojtech Rušin

Keyword(s):

Time Resolution ◽

White Light ◽

Short Time Scale ◽

High Time Resolution ◽

Green Line ◽

Periodic Intensity ◽

Coronal Green Line ◽

Significant Intensity ◽

Short Time ◽

Coronal Structures

AbstractWe present an analysis of short time-scale intensity variations in the coronal green line as obtained with high time resolution observations. The observed data can be divided into two groups. The first one shows periodic intensity variations with a period of 5 min. the second one does not show any significant intensity variations. We studied the relation between regions of coronal intensity oscillations and the shape of white-light coronal structures. We found that the coronal green-line oscillations occur mainly in regions where open white-light coronal structures are located.

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