HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.
XRISM Guest Scientist (XGS) Call for Proposals
Through the XGS program, scientists who are not XRISM Science Team members may
apply to participate in the observation planning and data analysis of
individual PV phase targets. All proposals should describe the complementary
and/or enhancing scientific expertise that the proposer would bring to a
Target Team. The list of the PV Targets can be found
here.
Further information regarding the solicitation, including instructions on how
to submit a proposal may be found in the
ROSES solicitation.
Tools for developing proposals, such as response files and simulation
software, can be found on the
Proposals and Tools
page. For questions regarding the XGS Program or XRISM in
general, please contact the help desk.
Below is a list of potential areas of expertise that could complement the
XRISM Science Team. Expertise for a potential XGS applicant is not limited
to the items below; we welcome proposals from any scientist who can add their
expertise to the PV phase of the mission.
- Data analysis techniques
Resolve enables, for the first time, high-resolution non-dispersive X-ray
spectroscopy with an unprecedented energy-resolution and signal-to-noise
ratio, particularly in the 2-10 keV energy band. Data analysis will most
likely present new challenges. Moreover, the moderate angular resolution of
XRISM implies that the analysis of the Resolve data of extended sources will
be particularly complex. Therefore, the XRISM Science Team welcomes expertise
from scientists who have knowledge or experience in:
- Machine learning approach for line detection, transient search, etc.
- Data cube modeling and analysis
- Machine learning approach for line detection, transient search, Point
Spread Function deconvolution etc.
- Modeling line broadening due to complex spatial and velocity structures
(in, e.g., galaxy clusters, SNRs)
- Transfer function modeling for time lag analysis (AGN)
- Doppler tomography (in compact binary objects)
- Cross-calibration with other X-ray operational missions
- Spectral diagnostics and atomic physics
The unprecedented spectral resolution of Resolve will also allow us to detect
spectral features that are unexpected or uncertain in currently available
spectral codes due to the paucity of experimental data or limitations in
theoretical calculations. Therefore, experts on theoretical or experimental
atomic physics related to the following topics are welcome.
- Charge exchange
- Dust X-Ray Absorption/Scattering Fine Structure (XAFS/XSFS)
- Multiple ionization process by ion-ion interaction
- Extremely low ionization non-equilibrium plasma
- Non-Maxwellian plasma
- Photoionization
- Theoretical insight and/or numerical simulations
Resolve spectroscopic data will push the boundaries of our knowledge of
astrophysics in several area. The XRISM Science Team expects that the XRISM
results will fundamentally challenge existing paradigms, and welcome experts
on theoretical models and simulations to support the interpretation of the
data and contribute to an advancement of the theoretical understanding in our
field. The required expertise includes, but is not limited to, the following
aspects.
For Extragalactic (galaxies, clusters) science:
- Feedback from active galactic nuclei in cool cores
- Hydrodynamic modeling of the intracluster medium
(e.g. turbulence/stripping/sloshing/cold front)
- Hydrodynamic modeling of starburst winds
- Supernova nucleosynthesis modeling
For Galactic diffuse (SNRs, ISM) science:
- Supernova nucleosynthesis modeling
- Dust creation and destruction in SNe and SNR shocks
- Hydrodynamic modeling of SNR evolution
- Theoretical expertise in shock heating, including cosmic-ray
acceleration
For Extragalactic compact science:
- Accretion disk theory
- Formation and structure of Broad and Narrow Line Regions and the
"torus" in Active Galactic Nuclei (AGN)
- AGN outflows/jets and their interaction with the nuclear environment
and the Interstellar Medium
- AGN/star formation connection
- AGN population study (particularly on non-blazar radio-loud AGN)
For Galactic compact (stellar objects) science:
- Wind launching mechanisms, including line driven winds and MHD simulations
in binary systems
- Disk reflection modelling
- Relativistic jets in galactic objects
- Simulations of colliding winds in binaries and binary systems evolution
- State-of-art mass-radius relations models in white dwarfs
- Multiwavelength observations of specific PV targets
Applications are welcome from scientists who have access to, and expertise in
the analysis of multiwavelength data that can facilitate the interpretation of
the XRISM data of a specific PV target.
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